Convert Atlantic Standard Time to Indochina Time
Instantly convert Atlantic Standard Time (AST) to Indochina Time (ICT) with our free online calculator.
Atlantic Standard Time
01:20:49 AM
Wed, Jun 24 (AST)
Indochina Time
12:20:49 PM
Wed, Jun 24 (ICT)
Convert a Specific Time
24-Hour Comparison
| AST | ICT |
|---|---|
| 12:00 AM | 11:00 AM |
| 1:00 AM | 12:00 PM |
| 2:00 AM | 1:00 PM |
| 3:00 AM | 2:00 PM |
| 4:00 AM | 3:00 PM |
| 5:00 AM | 4:00 PM |
| 6:00 AM | 5:00 PM |
| 7:00 AM | 6:00 PM |
| 8:00 AM | 7:00 PM |
| 9:00 AM | 8:00 PM |
| 10:00 AM | 9:00 PM |
| 11:00 AM | 10:00 PM |
| 12:00 PM | 11:00 PM |
| 1:00 PM | 12:00 AM(+1d) |
| 2:00 PM | 1:00 AM(+1d) |
| 3:00 PM | 2:00 AM(+1d) |
| 4:00 PM | 3:00 AM(+1d) |
| 5:00 PM | 4:00 AM(+1d) |
| 6:00 PM | 5:00 AM(+1d) |
| 7:00 PM | 6:00 AM(+1d) |
| 8:00 PM | 7:00 AM(+1d) |
| 9:00 PM | 8:00 AM(+1d) |
| 10:00 PM | 9:00 AM(+1d) |
| 11:00 PM | 10:00 AM(+1d) |
How to Convert Atlantic Standard Time to Indochina Time
Formula
To convert Atlantic Standard Time (AST) to Indochina Time (ICT): Convert AST to ICT
About Atlantic Standard Time (AST)
Atlantic Standard Time (AST, IANA: America/Halifax, America/Puerto_Rico) is the time zone for the Canadian Maritime provinces and most of the Caribbean, set at UTC-4:00. AST is observed in: Nova Scotia, New Brunswick, Prince Edward Island, Labrador (partially), Newfoundland's Labrador portion, eastern Quebec, Puerto Rico, US Virgin Islands, Bermuda, Anguilla, Antigua, Aruba, Barbados, British Virgin Islands, Curaçao, Dominica, Grenada, Guadeloupe, Martinique, Saint Lucia, Saint Vincent, Trinidad and Tobago, and Venezuela (since 2007). Canadian Maritime provinces observe AST in winter and switch to ADT = UTC-3:00 in summer per the Energy Policy Act-aligned Canadian schedule. The Caribbean territories (Puerto Rico, USVI, Bermuda) and US territories observe AST year-round without DST per their territorial governments. AST is the same offset as EDT (Eastern Daylight Time) during US summer months, so Halifax and New York are on the same clock in summer but Halifax is one hour ahead in winter.
About Indochina Time (ICT)
Indochina Time (ICT, IANA: Asia/Bangkok, Asia/Ho_Chi_Minh) is the civil time of mainland Southeast Asia (excluding Myanmar + Indonesia), set at UTC+7:00 year-round (no DST). ICT serves approximately 250 million people across: Thailand, Vietnam, Cambodia, Laos, Christmas Island (Australian territory in Indian Ocean), Java + Sumatra + western Indonesia (which uses Western Indonesian Time WIB = identical UTC+7 offset). ICT shares its offset with Krasnoyarsk Time (Russia, UTC+7) and Davis Antarctica research station. Major ICT cities: Bangkok Thailand (10.7M metro — Southeast Asia's largest tourist destination + ASEAN economic hub), Ho Chi Minh City Vietnam (10M city, 14M metro — formerly Saigon, Vietnam's largest city), Hanoi Vietnam (8M metro — capital), Jakarta Indonesia (10.5M city, 35M metro — uses WIB which is identical to ICT but a different zone-name), Phnom Penh Cambodia (2M), Vientiane Laos (820K). Affects: SET (Stock Exchange of Thailand) trading hours, HOSE + HNX (Vietnam stock exchanges) trading, Phnom Penh Securities Exchange (CSX) hours, Bangkok BTS Skytrain + MRT subway operating hours, and ASEAN diplomatic-meeting schedules.