Offset
The time difference between Haiphong and Central Time is 12 hours.
Haiphong (ICT) is ahead of Central Time (CDT).
ICT: UTC+7
CDT: UTC-5
Central Time is currently observing daylight saving time; Haiphong is not.
When to schedule
Standard business hours (9 AM–5 PM, Mon–Fri) in Haiphong and Central Time don't overlap on the same weekday. Central Time is 12 hours behind Haiphong.
With some flexibility, there’s a workable window outside standard hours:
- 7 PM–8 PM in Haiphong (7 AM–8 AM in Central Time) — suggest 7:00 PM Haiphong (7:00 AM Central Time).
This means an early start or late finish for one side, but it’s a reasonable slot for a one-off meeting.
This window may shift by an hour during daylight saving time.
Public holidays in 2026
National public holidays can affect availability — a counterpart is likely off work on their own holidays, so it's worth planning meetings and deadlines around them.
Vietnam
- New Year's DayThu, Jan 1
- Reunification DayThu, Apr 30
- Labour DayFri, May 1
- National DayWed, Sep 2
United States
- New Year's DayThu, Jan 1
- Martin Luther King, Jr. DayMon, Jan 19
- Presidents DayMon, Feb 16
- Memorial DayMon, May 25
- Juneteenth National Independence DayFri, Jun 19
- Independence DayFri, Jul 3
- Labour DayMon, Sep 7
- Columbus DayMon, Oct 12
- Veterans DayWed, Nov 11
- Thanksgiving DayThu, Nov 26
- Christmas DayFri, Dec 25
About these zones
Haiphong uses Indochina Time (ICT). To call Vietnam, dial +84.
Central Time is also known as CST, or CDT. To call United States, dial +1.
Central Time is approximately 8,000 miles north of Haiphong.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| Haiphong | CST | Day |
|---|---|---|
| 12:00 am | 12:00 pm | -1 day |
| 1:00 am | 1:00 pm | -1 day |
| 2:00 am | 2:00 pm | -1 day |
| 3:00 am | 3:00 pm | -1 day |
| 4:00 am | 4:00 pm | -1 day |
| 5:00 am | 5:00 pm | -1 day |
| 6:00 am | 6:00 pm | -1 day |
| 7:00 am | 7:00 pm | -1 day |
| 8:00 am | 8:00 pm | -1 day |
| 9:00 am | 9:00 pm | -1 day |
| 10:00 am | 10:00 pm | -1 day |
| 11:00 am | 11:00 pm | -1 day |
| 12:00 pm | 12:00 am | Same day |
| 1:00 pm | 1:00 am | Same day |
| 2:00 pm | 2:00 am | Same day |
| 3:00 pm | 3:00 am | Same day |
| 4:00 pm | 4:00 am | Same day |
| 5:00 pm | 5:00 am | Same day |
| 6:00 pm | 6:00 am | Same day |
| 7:00 pm | 7:00 am | Same day |
| 8:00 pm | 8:00 am | Same day |
| 9:00 pm | 9:00 am | Same day |
| 10:00 pm | 10:00 am | Same day |
| 11:00 pm | 11:00 am | Same day |
Daylight saving time
Central Time observes daylight saving time; Haiphong does not. The offset between the two zones changes when Central Time transitions: on Sunday, November 1, 2026, clocks fall back from CDT to CST.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 5:25 AM
- Sunset
- 6:36 PM
- Day length
- 13h 11m
- Sunrise
- 5:36 AM
- Sunset
- 8:19 PM
- Day length
- 14h 43m
Daylight overlap: 2h 54m — 5:25 AM–8:19 AM in Haiphong (5:25 PM–8:19 PM in Central Time). Both locations are in daylight during this window.
Cities in these zones
Cities in Central Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Indochina Time
- HAN
- BKK
- DMK
- HPH
Airports in Central Time
- GYY
- MDW
- ORD
- HOU
- IAH
- SAT
- DAL
- DFW
- AUS
- BNA
Related conversions
Common conversions
- What is 9:00 am Haiphong in CST?
- 9:00 am Haiphong is 9:00 pm CST, the previous day.
- What is 12:00 pm Haiphong in CST?
- 12:00 pm Haiphong is 12:00 am CST.
- What is 12:30 pm Haiphong in CST?
- 12:30 pm Haiphong is 12:30 am CST.
- What is 2:00 pm Haiphong in CST?
- 2:00 pm Haiphong is 2:00 am CST.
- What is 5:00 pm Haiphong in CST?
- 5:00 pm Haiphong is 5:00 am CST.
- What is 11:30 pm Haiphong in CST?
- 11:30 pm Haiphong is 11:30 am CST.