UTC to ICT Time Converter
ICT is 7 hours ahead of UTC. UTC is the zero point, UTC±00:00, and ICT is UTC+7:00.
Best Time to Call Between UTC and ICT
Both zones are inside normal business hours between 9:00 AM and 10:00 AM UTC — that's 4:00 PM to 5:00 PM ICT. That's a 1-hour window.
both at work UTC only ICT only neither — hours along the strip are UTC.
Common Times Converted
UTC on the left, ICT on the right.
UTC to ICT: Full 24-Hour Conversion Table
Shaded rows are working hours; the darker shade marks the hours when both zones are at work.
| UTC | ICT | Working hours |
|---|---|---|
| 12:00 AM | 7:00 AM | — |
| 1:00 AM | 8:00 AM | — |
| 2:00 AM | 9:00 AM | ICT only |
| 3:00 AM | 10:00 AM | ICT only |
| 4:00 AM | 11:00 AM | ICT only |
| 5:00 AM | 12:00 PM | ICT only |
| 6:00 AM | 1:00 PM | ICT only |
| 7:00 AM | 2:00 PM | ICT only |
| 8:00 AM | 3:00 PM | ICT only |
| 9:00 AM | 4:00 PM | Both zones |
| 10:00 AM | 5:00 PM | UTC only |
| 11:00 AM | 6:00 PM | UTC only |
| 12:00 PM | 7:00 PM | UTC only |
| 1:00 PM | 8:00 PM | UTC only |
| 2:00 PM | 9:00 PM | UTC only |
| 3:00 PM | 10:00 PM | UTC only |
| 4:00 PM | 11:00 PM | UTC only |
| 5:00 PM | 12:00 AM next day | — |
| 6:00 PM | 1:00 AM next day | — |
| 7:00 PM | 2:00 AM next day | — |
| 8:00 PM | 3:00 AM next day | — |
| 9:00 PM | 4:00 AM next day | — |
| 10:00 PM | 5:00 AM next day | — |
| 11:00 PM | 6:00 AM next day | — |
What UTC and ICT Actually Are
UTC — Coordinated Universal Time
The global reference standard. Aviation, computing and science run on it. Standing at UTC as written, and the region does not change its clocks, so that offset holds all year.
UTC is not a place. It is a computed standard, kept within a second of mean solar time at Greenwich by atomic clocks, and it is the reference every other zone is defined against.
ICT — Indochina Time
Bangkok, Ho Chi Minh City, Hanoi, Phnom Penh, Vientiane. Standing at UTC+7:00 as written, and the region does not change its clocks, so that offset holds all year.
Indochina Time is shared across four countries, which makes South-East Asian scheduling unusually simple compared with Europe or the Americas.
What This Means in Practice
A gap you can rely on
Neither region changes its clocks, so this difference holds every day of the year. A recurring meeting booked once stays correct — worth knowing, because most cross-border pairs cannot say that.
Major Cities in Each Zone
Cities on ICT
Frequently Asked Questions
What is the time difference between UTC and ICT?
ICT is 7 hours ahead of UTC.
What is 9:00 AM UTC in ICT?
9:00 AM UTC is 4:00 PM ICT.
What are the best hours to schedule a call between UTC and ICT?
Between 9:00 AM and 10:00 AM UTC, which is 4:00 PM to 5:00 PM ICT. Both sides are inside normal business hours through that window.
Does the difference between UTC and ICT change during the year?
No. Neither region changes its clocks, so this gap is fixed all year round.