Odyssey Day Cruise: Ha Long Bay, Sung Sot Cave, Ti Top Island

• Departure: Meet the operator at 11:30. Enter your preferred location at checkout. The operator will make the final confirmation accordingly. Please check in at the Halong Odyssey waiting lounge or meet our team at Tuan Chau International Marina..Latecomers or no-shows can't be refunded Please arrive at the location 10 mins before the departure time
• [Attraction/experience] 11:45, Tuần Châu Harbor, Welcome on board Cruise manager and staff provide a quick overview of the cruise, safety regulations, and the day’s itinerary in Halong Bay
• [Dining] 12:30, Lunch, Enjoy a delicious onboard buffet lunch with fresh seafood, authentic Vietnamese, and creative fusion dishes as you cruise leisurely past the bay's amazing and towering limestone islands.
• [Attraction/experience] Guided tour, Sung Sot Cave, Explore Sung Sot Cave (Surprising Cave) - The Largest cave of Ha Long Bay
• [Attraction/experience] Ti Top Island, Our next stop is the iconic Ti Top Island You can either relax and swim on the white sand beach or embark on a hike to the peak for a panoramic view of the bay
• [Attraction/experience] Guided tour, Hang Luon, Explore Luon Cave – a magnificent water cave where you can paddle a kayak or sit back on a bamboo boat rowed by a local, gliding through a serene lagoon surrounded by majestic limestone cliffs.
• [Dining] Afternoon tea, Return to Halong Odyssey Cruise for the Sunset Party. Enjoy the stunning view of Halong Bay at dusk or relax in the on-deck jacuzzi.
• [Return] 17:30 - 17:45, at Tuan Chau Harbour, Arrive at Tuan Chau Harbour. Tour end
• Day {num}
• The menu might change depending on the season and availability of ingredients

Eligibility

• Children aged 10+ will be charged the same rate as adults
• 2 paying adult can accompany 01 child aged 0 - 4 as long as they will not occupy separate seats. A child ticket will be required for each additional child aged 0 - 4
• Children aged 5 - 9 incur an additional charge

Additional information

• The operator will contact you via Messenger app between 20:00 and 21:00 the day before departure to confirm information. Please provide contact method at check-out page and check your message during this period
• Free Wi-Fi is accessible on the sundeck and restaurant area, please note that internet signals at sea suffer frequent interruptions
• The cruise serves fusion cuisine, including international, seafood, and Vietnamese dishes. Please notify of any special food preferences, dietary restrictions, or allergies before departure
• Please be mindful not to feed the marine animals, walk on corals, or engage in any activity that may damage the marine ecosystem

What to bring

• Change of clothes / Sunscreen / Sunglasses / Caps or hats / Swimwear / Cash

• Departure: Meet the operator at 08:00. Enter your preferred location at checkout. The operator will make the final confirmation accordingly. Address: 1 Trang Tien Gather at the Hanoi Opera House if your hotel is outside of Hanoi Old Quarter area.Latecomers or no-shows can't be refunded This is a shared transfer and pick up could be early or late Enter your hotel name and address at the checkout page The operator will re-confirm your pick-up time in advance Please arrive at the location 10 mins before the departure time
• Departure: Get picked up at 08:00 - 08:30. Enter your preferred location at checkout. The operator will make the final confirmation accordingly. We will pick you up from your hotel in the Hanoi Old Quarter, and on the way, we'll have a short 30-minute break.Latecomers or no-shows can't be refunded This is a shared transfer and pick up could be early or late Enter your hotel name and address at the checkout page The operator will re-confirm your pick-up time in advance Please arrive at the location 10 mins before the departure time
• [Attraction/experience] 11:45, Tuần Châu Harbor, Welcome on board Cruise manager and staff provide a quick overview of the cruise, safety regulations, and the day’s itinerary in Halong Bay
• [Dining] 12:30, Lunch, Enjoy a delicious onboard buffet lunch with fresh seafood, authentic Vietnamese, and creative fusion dishes as you cruise leisurely past the bay's amazing and towering limestone islands.
• [Attraction/experience] Guided tour, Sung Sot Cave, Explore Sung Sot Cave (Surprising Cave) - The Largest cave of Ha Long Bay
• [Attraction/experience] Guided tour, Hang Luon, Explore Luon Cave – a magnificent water cave where you can paddle a kayak or sit back on a bamboo boat rowed by a local, gliding through a serene lagoon surrounded by majestic limestone cliffs.
• [Attraction/experience] Ti Top Island, Our next stop is the iconic Ti Top Island You can either relax and swim on the white sand beach or embark on a hike to the peak for a panoramic view of the bay
• [Dining] Afternoon tea, Return to Halong Odyssey Cruise for the Sunset Party. Enjoy the stunning view of Halong Bay at dusk or relax in the on-deck jacuzzi.
• [Return] 17:30 - 17:45, at Tuan Chau Harbour, Arrive at Tuan Chau Harbour. Get on the bus to return to Hanoi (20:30) Tour end
• Day {num}
• The menu might change depending on the season and availability of ingredients

Eligibility

• Children aged 10+ will be charged the same rate as adults
• 2 paying adult can accompany 01 child aged 0 - 4 as long as they will not occupy separate seats. A child ticket will be required for each additional child aged 0 - 4
• Children aged 5 - 9 incur an additional charge

Additional information

• Free Wi-Fi is accessible on the sundeck and restaurant area, please note that internet signals at sea suffer frequent interruptions
• The cruise serves fusion cuisine, including international, seafood, and Vietnamese dishes. Please notify of any special food preferences, dietary restrictions, or allergies before departure
• Please be mindful not to feed the marine animals, walk on corals, or engage in any activity that may damage the marine ecosystem

What to bring

• Change of clothes / Sunscreen / Sunglasses / Caps or hats / Swimwear / Cash / Towel

Usage validity

• The voucher is valid only on the specified date (and time if applicable)

Pick-up information

Hotel pick-up information

• Hotel pick-up and drop-off services are available

• Operator will reconfirm your pick-up time in advance

• This is a shared transfer and early or late pick-up is possible

• Arrive at the hotel lobby 5 minutes before your selected pick up time

• Enter your hotel name and address at the checkout page

• The driver will wait for up to 5 minutes before leaving (no refunds after this time)

• Pick up customers at hotels located in Hanoi's Old Quarter

• The operator will contact you via Messenger app between 20:00 and 21:00 the day before departure to confirm information. Please provide contact method at check-out page and check your message during this period

• Departure: Meet the operator at 11:30. Enter your preferred location at checkout. The operator will make the final confirmation accordingly. Please check in at the Halong Odyssey waiting lounge or meet our team at Tuan Chau International Marina..Latecomers or no-shows can't be refunded Please arrive at the location 10 mins before the departure time
• [Attraction/experience] 11:45, Tuần Châu Harbor, Welcome on board Cruise manager and staff provide a quick overview of the cruise, safety regulations, and the day’s itinerary in Halong Bay
• [Dining] 12:30, Lunch, Enjoy a delicious onboard buffet lunch with fresh seafood, authentic Vietnamese, and creative fusion dishes as you cruise leisurely past the bay's amazing and towering limestone islands.
• [Attraction/experience] Guided tour, Sung Sot Cave, Explore Sung Sot Cave (Surprising Cave) - The Largest cave of Ha Long Bay
• [Attraction/experience] Ti Top Island, Our next stop is the iconic Ti Top Island You can either relax and swim on the white sand beach or embark on a hike to the peak for a panoramic view of the bay
• [Attraction/experience] Guided tour, Hang Luon, Explore Luon Cave – a magnificent water cave where you can paddle a kayak or sit back on a bamboo boat rowed by a local, gliding through a serene lagoon surrounded by majestic limestone cliffs.
• [Dining] Afternoon tea, Return to Halong Odyssey Cruise for the Sunset Party. Enjoy the stunning view of Halong Bay at dusk or relax in the on-deck jacuzzi.
• [Return] 17:30 - 17:45, at Tuan Chau Harbour, Arrive at Tuan Chau Harbour. Tour end
• Day {num}
• The menu might change depending on the season and availability of ingredients

Eligibility

• Children aged 10+ will be charged the same rate as adults
• 2 paying adult can accompany 01 child aged 0 - 4 as long as they will not occupy separate seats. A child ticket will be required for each additional child aged 0 - 4
• Children aged 5 - 9 incur an additional charge

Additional information

• The operator will contact you via Messenger app between 20:00 and 21:00 the day before departure to confirm information. Please provide contact method at check-out page and check your message during this period
• Free Wi-Fi is accessible on the sundeck and restaurant area, please note that internet signals at sea suffer frequent interruptions
• The cruise serves fusion cuisine, including international, seafood, and Vietnamese dishes. Please notify of any special food preferences, dietary restrictions, or allergies before departure
• Please be mindful not to feed the marine animals, walk on corals, or engage in any activity that may damage the marine ecosystem

What to bring

• Change of clothes / Sunscreen / Sunglasses / Caps or hats / Swimwear / Cash

• Departure: Meet the operator at 08:00. Enter your preferred location at checkout. The operator will make the final confirmation accordingly. Address: 1 Trang Tien Gather at the Hanoi Opera House if your hotel is outside of Hanoi Old Quarter area.Latecomers or no-shows can't be refunded This is a shared transfer and pick up could be early or late Enter your hotel name and address at the checkout page The operator will re-confirm your pick-up time in advance Please arrive at the location 10 mins before the departure time
• Departure: Get picked up at 08:00 - 08:30. Enter your preferred location at checkout. The operator will make the final confirmation accordingly. We will pick you up from your hotel in the Hanoi Old Quarter, and on the way, we'll have a short 30-minute break.Latecomers or no-shows can't be refunded This is a shared transfer and pick up could be early or late Enter your hotel name and address at the checkout page The operator will re-confirm your pick-up time in advance Please arrive at the location 10 mins before the departure time
• [Attraction/experience] 11:45, Tuần Châu Harbor, Welcome on board Cruise manager and staff provide a quick overview of the cruise, safety regulations, and the day’s itinerary in Halong Bay
• [Dining] 12:30, Lunch, Enjoy a delicious onboard buffet lunch with fresh seafood, authentic Vietnamese, and creative fusion dishes as you cruise leisurely past the bay's amazing and towering limestone islands.
• [Attraction/experience] Guided tour, Sung Sot Cave, Explore Sung Sot Cave (Surprising Cave) - The Largest cave of Ha Long Bay
• [Attraction/experience] Guided tour, Hang Luon, Explore Luon Cave – a magnificent water cave where you can paddle a kayak or sit back on a bamboo boat rowed by a local, gliding through a serene lagoon surrounded by majestic limestone cliffs.
• [Attraction/experience] Ti Top Island, Our next stop is the iconic Ti Top Island You can either relax and swim on the white sand beach or embark on a hike to the peak for a panoramic view of the bay
• [Dining] Afternoon tea, Return to Halong Odyssey Cruise for the Sunset Party. Enjoy the stunning view of Halong Bay at dusk or relax in the on-deck jacuzzi.
• [Return] 17:30 - 17:45, at Tuan Chau Harbour, Arrive at Tuan Chau Harbour. Get on the bus to return to Hanoi (20:30) Tour end
• Day {num}
• The menu might change depending on the season and availability of ingredients

Eligibility

• Children aged 10+ will be charged the same rate as adults
• 2 paying adult can accompany 01 child aged 0 - 4 as long as they will not occupy separate seats. A child ticket will be required for each additional child aged 0 - 4
• Children aged 5 - 9 incur an additional charge

Additional information

• Free Wi-Fi is accessible on the sundeck and restaurant area, please note that internet signals at sea suffer frequent interruptions
• The cruise serves fusion cuisine, including international, seafood, and Vietnamese dishes. Please notify of any special food preferences, dietary restrictions, or allergies before departure
• Please be mindful not to feed the marine animals, walk on corals, or engage in any activity that may damage the marine ecosystem

What to bring

• Change of clothes / Sunscreen / Sunglasses / Caps or hats / Swimwear / Cash / Towel

Usage validity

• The voucher is valid only on the specified date (and time if applicable)

Pick-up information

Hotel pick-up information

• Hotel pick-up and drop-off services are available

• Operator will reconfirm your pick-up time in advance

• This is a shared transfer and early or late pick-up is possible

• Arrive at the hotel lobby 5 minutes before your selected pick up time

• Enter your hotel name and address at the checkout page

• The driver will wait for up to 5 minutes before leaving (no refunds after this time)

• Pick up customers at hotels located in Hanoi's Old Quarter

• The operator will contact you via Messenger app between 20:00 and 21:00 the day before departure to confirm information. Please provide contact method at check-out page and check your message during this period

• Departure: Meet the operator at 11:30. Enter your preferred location at checkout. The operator will make the final confirmation accordingly. Please check in at the Halong Odyssey waiting lounge or meet our team at Tuan Chau International Marina..Latecomers or no-shows can't be refunded Please arrive at the location 10 mins before the departure time
• [Attraction/experience] 11:45, Tuần Châu Harbor, Welcome on board Cruise manager and staff provide a quick overview of the cruise, safety regulations, and the day’s itinerary in Halong Bay
• [Dining] 12:30, Lunch, Enjoy a delicious onboard buffet lunch with fresh seafood, authentic Vietnamese, and creative fusion dishes as you cruise leisurely past the bay's amazing and towering limestone islands.
• [Attraction/experience] Guided tour, Sung Sot Cave, Explore Sung Sot Cave (Surprising Cave) - The Largest cave of Ha Long Bay
• [Attraction/experience] Ti Top Island, Our next stop is the iconic Ti Top Island You can either relax and swim on the white sand beach or embark on a hike to the peak for a panoramic view of the bay
• [Attraction/experience] Guided tour, Hang Luon, Explore Luon Cave – a magnificent water cave where you can paddle a kayak or sit back on a bamboo boat rowed by a local, gliding through a serene lagoon surrounded by majestic limestone cliffs.
• [Dining] Afternoon tea, Return to Halong Odyssey Cruise for the Sunset Party. Enjoy the stunning view of Halong Bay at dusk or relax in the on-deck jacuzzi.
• [Return] 17:30 - 17:45, at Tuan Chau Harbour, Arrive at Tuan Chau Harbour. Tour end
• Day {num}
• The menu might change depending on the season and availability of ingredients

Eligibility

• Children aged 10+ will be charged the same rate as adults
• 2 paying adult can accompany 01 child aged 0 - 4 as long as they will not occupy separate seats. A child ticket will be required for each additional child aged 0 - 4
• Children aged 5 - 9 incur an additional charge

Additional information

• The operator will contact you via Messenger app between 20:00 and 21:00 the day before departure to confirm information. Please provide contact method at check-out page and check your message during this period
• Free Wi-Fi is accessible on the sundeck and restaurant area, please note that internet signals at sea suffer frequent interruptions
• The cruise serves fusion cuisine, including international, seafood, and Vietnamese dishes. Please notify of any special food preferences, dietary restrictions, or allergies before departure
• Please be mindful not to feed the marine animals, walk on corals, or engage in any activity that may damage the marine ecosystem

What to bring

• Change of clothes / Sunscreen / Sunglasses / Caps or hats / Swimwear / Cash

• Departure: Meet the operator at 08:00. Enter your preferred location at checkout. The operator will make the final confirmation accordingly. Address: 1 Trang Tien Gather at the Hanoi Opera House if your hotel is outside of Hanoi Old Quarter area.Latecomers or no-shows can't be refunded This is a shared transfer and pick up could be early or late Enter your hotel name and address at the checkout page The operator will re-confirm your pick-up time in advance Please arrive at the location 10 mins before the departure time
• Departure: Get picked up at 08:00 - 08:30. Enter your preferred location at checkout. The operator will make the final confirmation accordingly. We will pick you up from your hotel in the Hanoi Old Quarter, and on the way, we'll have a short 30-minute break.Latecomers or no-shows can't be refunded This is a shared transfer and pick up could be early or late Enter your hotel name and address at the checkout page The operator will re-confirm your pick-up time in advance Please arrive at the location 10 mins before the departure time
• [Attraction/experience] 11:45, Tuần Châu Harbor, Welcome on board Cruise manager and staff provide a quick overview of the cruise, safety regulations, and the day’s itinerary in Halong Bay
• [Dining] 12:30, Lunch, Enjoy a delicious onboard buffet lunch with fresh seafood, authentic Vietnamese, and creative fusion dishes as you cruise leisurely past the bay's amazing and towering limestone islands.
• [Attraction/experience] Guided tour, Sung Sot Cave, Explore Sung Sot Cave (Surprising Cave) - The Largest cave of Ha Long Bay
• [Attraction/experience] Guided tour, Hang Luon, Explore Luon Cave – a magnificent water cave where you can paddle a kayak or sit back on a bamboo boat rowed by a local, gliding through a serene lagoon surrounded by majestic limestone cliffs.
• [Attraction/experience] Ti Top Island, Our next stop is the iconic Ti Top Island You can either relax and swim on the white sand beach or embark on a hike to the peak for a panoramic view of the bay
• [Dining] Afternoon tea, Return to Halong Odyssey Cruise for the Sunset Party. Enjoy the stunning view of Halong Bay at dusk or relax in the on-deck jacuzzi.
• [Return] 17:30 - 17:45, at Tuan Chau Harbour, Arrive at Tuan Chau Harbour. Get on the bus to return to Hanoi (20:30) Tour end
• Day {num}
• The menu might change depending on the season and availability of ingredients

Eligibility

• Children aged 10+ will be charged the same rate as adults
• 2 paying adult can accompany 01 child aged 0 - 4 as long as they will not occupy separate seats. A child ticket will be required for each additional child aged 0 - 4
• Children aged 5 - 9 incur an additional charge

Additional information

• Free Wi-Fi is accessible on the sundeck and restaurant area, please note that internet signals at sea suffer frequent interruptions
• The cruise serves fusion cuisine, including international, seafood, and Vietnamese dishes. Please notify of any special food preferences, dietary restrictions, or allergies before departure
• Please be mindful not to feed the marine animals, walk on corals, or engage in any activity that may damage the marine ecosystem

What to bring

• Change of clothes / Sunscreen / Sunglasses / Caps or hats / Swimwear / Cash / Towel

Usage validity

• The voucher is valid only on the specified date (and time if applicable)

Pick-up information

Hotel pick-up information

• Hotel pick-up and drop-off services are available

• Operator will reconfirm your pick-up time in advance

• This is a shared transfer and early or late pick-up is possible

• Arrive at the hotel lobby 5 minutes before your selected pick up time

• Enter your hotel name and address at the checkout page

• The driver will wait for up to 5 minutes before leaving (no refunds after this time)

• Pick up customers at hotels located in Hanoi's Old Quarter

• The operator will contact you via Messenger app between 20:00 and 21:00 the day before departure to confirm information. Please provide contact method at check-out page and check your message during this period

• Departure: Meet the operator at 11:30. Enter your preferred location at checkout. The operator will make the final confirmation accordingly. Please check in at the Halong Odyssey waiting lounge or meet our team at Tuan Chau International Marina..Latecomers or no-shows can't be refunded Please arrive at the location 10 mins before the departure time
• [Attraction/experience] 11:45, Tuần Châu Harbor, Welcome on board Cruise manager and staff provide a quick overview of the cruise, safety regulations, and the day’s itinerary in Halong Bay
• [Dining] 12:30, Lunch, Enjoy a delicious onboard buffet lunch with fresh seafood, authentic Vietnamese, and creative fusion dishes as you cruise leisurely past the bay's amazing and towering limestone islands.
• [Attraction/experience] Guided tour, Sung Sot Cave, Explore Sung Sot Cave (Surprising Cave) - The Largest cave of Ha Long Bay
• [Attraction/experience] Ti Top Island, Our next stop is the iconic Ti Top Island You can either relax and swim on the white sand beach or embark on a hike to the peak for a panoramic view of the bay
• [Attraction/experience] Guided tour, Hang Luon, Explore Luon Cave – a magnificent water cave where you can paddle a kayak or sit back on a bamboo boat rowed by a local, gliding through a serene lagoon surrounded by majestic limestone cliffs.
• [Dining] Afternoon tea, Return to Halong Odyssey Cruise for the Sunset Party. Enjoy the stunning view of Halong Bay at dusk or relax in the on-deck jacuzzi.
• [Return] 17:30 - 17:45, at Tuan Chau Harbour, Arrive at Tuan Chau Harbour. Tour end
• Day {num}
• The menu might change depending on the season and availability of ingredients

Eligibility

• Children aged 10+ will be charged the same rate as adults
• 2 paying adult can accompany 01 child aged 0 - 4 as long as they will not occupy separate seats. A child ticket will be required for each additional child aged 0 - 4
• Children aged 5 - 9 incur an additional charge

Additional information

• The operator will contact you via Messenger app between 20:00 and 21:00 the day before departure to confirm information. Please provide contact method at check-out page and check your message during this period
• Free Wi-Fi is accessible on the sundeck and restaurant area, please note that internet signals at sea suffer frequent interruptions
• The cruise serves fusion cuisine, including international, seafood, and Vietnamese dishes. Please notify of any special food preferences, dietary restrictions, or allergies before departure
• Please be mindful not to feed the marine animals, walk on corals, or engage in any activity that may damage the marine ecosystem

What to bring

• Change of clothes / Sunscreen / Sunglasses / Caps or hats / Swimwear / Cash

• Departure: Meet the operator at 08:00. Enter your preferred location at checkout. The operator will make the final confirmation accordingly. Address: 1 Trang Tien Gather at the Hanoi Opera House if your hotel is outside of Hanoi Old Quarter area.Latecomers or no-shows can't be refunded This is a shared transfer and pick up could be early or late Enter your hotel name and address at the checkout page The operator will re-confirm your pick-up time in advance Please arrive at the location 10 mins before the departure time
• Departure: Get picked up at 08:00 - 08:30. Enter your preferred location at checkout. The operator will make the final confirmation accordingly. We will pick you up from your hotel in the Hanoi Old Quarter, and on the way, we'll have a short 30-minute break.Latecomers or no-shows can't be refunded This is a shared transfer and pick up could be early or late Enter your hotel name and address at the checkout page The operator will re-confirm your pick-up time in advance Please arrive at the location 10 mins before the departure time
• [Attraction/experience] 11:45, Tuần Châu Harbor, Welcome on board Cruise manager and staff provide a quick overview of the cruise, safety regulations, and the day’s itinerary in Halong Bay
• [Dining] 12:30, Lunch, Enjoy a delicious onboard buffet lunch with fresh seafood, authentic Vietnamese, and creative fusion dishes as you cruise leisurely past the bay's amazing and towering limestone islands.
• [Attraction/experience] Guided tour, Sung Sot Cave, Explore Sung Sot Cave (Surprising Cave) - The Largest cave of Ha Long Bay
• [Attraction/experience] Guided tour, Hang Luon, Explore Luon Cave – a magnificent water cave where you can paddle a kayak or sit back on a bamboo boat rowed by a local, gliding through a serene lagoon surrounded by majestic limestone cliffs.
• [Attraction/experience] Ti Top Island, Our next stop is the iconic Ti Top Island You can either relax and swim on the white sand beach or embark on a hike to the peak for a panoramic view of the bay
• [Dining] Afternoon tea, Return to Halong Odyssey Cruise for the Sunset Party. Enjoy the stunning view of Halong Bay at dusk or relax in the on-deck jacuzzi.
• [Return] 17:30 - 17:45, at Tuan Chau Harbour, Arrive at Tuan Chau Harbour. Get on the bus to return to Hanoi (20:30) Tour end
• Day {num}
• The menu might change depending on the season and availability of ingredients

Eligibility

• Children aged 10+ will be charged the same rate as adults
• 2 paying adult can accompany 01 child aged 0 - 4 as long as they will not occupy separate seats. A child ticket will be required for each additional child aged 0 - 4
• Children aged 5 - 9 incur an additional charge

Additional information

• Free Wi-Fi is accessible on the sundeck and restaurant area, please note that internet signals at sea suffer frequent interruptions
• The cruise serves fusion cuisine, including international, seafood, and Vietnamese dishes. Please notify of any special food preferences, dietary restrictions, or allergies before departure
• Please be mindful not to feed the marine animals, walk on corals, or engage in any activity that may damage the marine ecosystem

What to bring

• Change of clothes / Sunscreen / Sunglasses / Caps or hats / Swimwear / Cash / Towel

Usage validity

• The voucher is valid only on the specified date (and time if applicable)

Pick-up information

Hotel pick-up information

• Hotel pick-up and drop-off services are available

• Operator will reconfirm your pick-up time in advance

• This is a shared transfer and early or late pick-up is possible

• Arrive at the hotel lobby 5 minutes before your selected pick up time

• Enter your hotel name and address at the checkout page

• The driver will wait for up to 5 minutes before leaving (no refunds after this time)

• Pick up customers at hotels located in Hanoi's Old Quarter

• The operator will contact you via Messenger app between 20:00 and 21:00 the day before departure to confirm information. Please provide contact method at check-out page and check your message during this period