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Time in Cambodia — regions, cities and time zones

Cambodia keeps one time zone, seven hours ahead of UTC, and does not observe daylight saving. Phnom Penh, Siem Reap, Battambang and the coast all read the same clock, unchanged through the year.

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Capital Phnom Penh · Asia · ISO KH / KHM

Phnom Penh, Cambodia

Friday, 4 September 2026

UTC+7 · Asia/Phnom_Penh

Time and sun data for Phnom Penh, Cambodia

The sun in Phnom Penh

Sunrise 05:51 Solar noon 12:01 Sunset 18:10 Daylight 12 h 19 min Night 11 h 41 min Civil twilight 05:30 – 18:32

States and regions (26)

Current time in Phnom Penh

Phnom Penh, the capital, sits at the confluence of the Mekong and the Tonlé Sap and sets the national time — though with a single zone covering the country, every province sets it equally. Government hours, transport timetables and business schedules across Cambodia use this one reading.

The offset places Cambodia alongside its neighbours on mainland Southeast Asia, which makes regional travel and coordination unusually painless: the overland routes in and out of the country involve no clock adjustment.

One zone across the mainland

Cambodia's seven-hour offset is shared by several neighbouring countries, forming a broad block of the mainland that keeps the same time. That block ends at the borders with countries a further hour ahead, so the change comes when heading east or north rather than within the region.

Thailand, Laos and Vietnam share Cambodia's offset — no change on those borders. China and much of maritime Southeast Asia sit one hour ahead. India and Bangladesh are behind, by amounts that include a half-hour step.

None of the immediate neighbours observes daylight saving, so the gaps are stable. Cambodia is a rare place where a road trip across three countries costs you nothing on the watch — the border queue takes longer than the time zone ever will.

Daylight saving

Cambodia does not change its clocks. The country lies in the tropics, where daylight varies only modestly between the seasons, so there is no long summer evening for a shift to capture. The year is organised around rain rather than light. The wet and dry seasons determine when fields are worked, when roads are easy, and when the Tonlé Sap swells and reverses — a rhythm that no clock adjustment could reflect and none tries to.

For scheduling, this means Cambodia's offset never moves. When a standing call with a European or North American counterpart drifts by an hour, the cause is their transition, not Cambodia's, and the remedy is to fix the appointment to a named zone rather than to a computed difference.

Provinces, travel and practical hours

There are no internal time boundaries. All provinces — from Ratanakiri in the northeast to Koh Kong on the southwestern coast — keep the same time, and domestic travel never involves resetting anything.

Practical notes for planning around Cambodian hours: Expect a full working-day overlap with Thailand, Laos and Vietnam. Europe becomes reachable in Cambodia's late afternoon and evening. North America overlaps barely at all; asynchronous work suits better than live meetings.

Sunrise-timed activities — temple visits, market runs, early transport — are set by the sun's schedule, which is nearly constant here. The last point is worth more than the offset for visitors. With little seasonal variation in day length, an early start means roughly the same hour in any month, which makes planning around light unusually predictable.

Questions and answers

Does Cambodia observe daylight saving time?
No. The clocks stay fixed all year, and the offset from UTC does not change.
Is Siem Reap on a different time from Phnom Penh?
No. The whole country uses a single time zone, so all cities and provinces share the same clock.
Do I change my watch entering Cambodia from Thailand or Vietnam?
No. Those neighbours keep the same offset, so overland crossings involve no time change.
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