Jamaica Jet Lag Calculator

A gap this size is a weekend problem, not a week problem: Kingston mornings feel early at first. By day three or four in Jamaica, your body has caught up. Concretely: London → Kingston = 5 h, New York → Kingston = 0 h, Tokyo → Kingston = 14 h, Sydney → Kingston = 15 h.

One useful constant: Kingston — and with it the Jamaica clock — stays pinned to UTC-5 for the whole trip. Reference frame for Jamaica: Kingston keeps UTC-5 and sits 17 m above sea level in Caribbean, with that same offset in every season.

Before you fly to Jamaica: move bedtime and meal times 30–60 minutes per day toward Kingston time for 3–4 days. In the air on the Jamaica route (arrival UTC-5), hydrate hard and skip alcohol. Sleep only when it is night in Kingston, so the cabin previews Jamaica hours.

On arrival, anchor the new rhythm with an outdoor morning in Kingston and meals on Jamaica time from the first day. Dry cabin air quietly drains you on the way to Jamaica; an extra 500 ml of water per 3 hours in the air keeps the Kingston arrival day survivable. Applied to this Caribbean trip: 5 hours west from London to Kingston maps to about 3.3 reset days, so a Jamaica itinerary should front-load outdoor time on days one to 4.

Sleep follows light in Jamaica: book a dark room in Kingston (17 m), keep it cool (16–20°C), and wear a mask if the late sunset leaks through the blinds. If Jamaica wakes you at 4am on night one in Kingston, stay dark and still — checking the clock anchors wakefulness. If the afternoon slump hits in Kingston, nap 20–30 minutes maximum, before 3pm Jamaica time.

Or push through with a walk in Jamaica — long naps push adjustment back a day. Practical baseline: lights out in a dark 16–20°C Kingston room (17 m, UTC-5), and no evening alcohol for the first two nights while the Jamaica clock settles.