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Jet lag plan

Chiang Mai → Phuket

Chiang Mai and Phuket share the same time zone.

About 1,215 km due south · approximately 2.4-hour non-stop flight · a medium-haul flight.

On arrival

  • Chiang Mai and Phuket are in the same time zone — no jet lag adjustment needed.

About the Chiang Mai → Phuket route

The route from Chiang Mai, Thailand to Phuket, Thailand covers roughly 1,215 kilometres in a due south direction. At standard jet cruise speed plus a one-hour allowance for taxi, climb, and descent, a non-stop flight takes about 2.4 hours. Both cities sit in the northern hemisphere, so the seasonal direction of daylight (longer days in June, shorter in December) matches between origin and destination.

Chiang Mai is in the tropics, so day length varies only slightly across the year. Light cues for the circadian system stay strong year-round. Phuket sits within ten degrees of the equator, so day length is nearly constant year-round (about 12 hours). Sunset and sunrise stay close to 06:00 and 18:00 regardless of season.

Business-hours overlap

Standard 09:00–18:00 working hours at both ends of this route overlap by approximately 9 hours. In Chiang Mai that window runs 09:00 to 18:00; in Phuket it is 09:00 to 18:00. This is the realistic window for live meetings, customer calls, or pair work without forcing either end out of normal hours.

Daylight saving on this route

Neither city observes daylight saving time, so the hour offset on this route is fixed year-round. This makes recurring schedules and calendar invites with collaborators on the other end safer than for DST-observing pairs.

Frequently asked questions

How long is the flight from Chiang Mai to Phuket?

The great-circle distance from Chiang Mai to Phuket is about 1,215 kilometres. A typical non-stop flight takes around 2.4 hours at standard cruise speed; routes with connections add two to four hours.

What is the time difference between Chiang Mai and Phuket?

Chiang Mai and Phuket share the same time zone, so there is no clock offset on this route.

Is jet lag worse flying east or west on this route?

No circadian shift is required between these two cities.

Should I take melatonin for the Chiang Mai → Phuket trip?

For a shift of 0 hours, melatonin offers little benefit beyond what consistent light exposure already provides. The Cochrane review on jet-lag melatonin shows the strongest effects on shifts of five hours or more.

Do I need a pre-trip schedule shift for Chiang Mai → Phuket?

For a shift under two hours, pre-trip adjustment is usually not worth the effort.

What chronotype handles this route best?

Chronotype does not affect adjustment on a same-time-zone route.

Sources

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