Jet lag plan
Tokyo is 1 hour behind Sydney. You're traveling west — the easier direction. Your body delays its clock.
About 7,826 km due north · approximately 10-hour non-stop flight · an ultra-long-haul flight.
The route from Sydney, Australia to Tokyo, Japan covers roughly 7,826 kilometres in a due north direction. At standard jet cruise speed plus a one-hour allowance for taxi, climb, and descent, a non-stop flight takes about 10 hours. This route crosses the equator. The destination's season is reversed relative to the origin, which can amplify the perceived disorientation of jet lag — your body lands not just in a different clock but in a different daylight regime.
Sydney is in the subtropics. Day length varies by roughly two hours between summer and winter; light remains a reliable circadian cue most of the year. Tokyo is in the temperate zone. Day length varies by four to six hours between summer and winter, so the season of your trip materially affects available morning and evening light.
Standard 09:00–18:00 working hours at both ends of this route overlap by approximately 8 hours. In Sydney that window runs 10:00 to 18:00; in Tokyo it is 09:00 to 17:00. This is the realistic window for live meetings, customer calls, or pair work without forcing either end out of normal hours.
Only one of the two cities observes daylight saving time, so the offset between them shifts by one hour twice a year. If you have recurring meetings on this route, double-check the local time around the DST transitions (March and October/November in the northern hemisphere).
If you are a lark (morning type): Westward travel is the easier direction and larks usually feel close to baseline within 2 days. The risk for larks is overshooting: stay up later than you feel like at the destination for the first two nights to avoid waking before local sunrise.
If you are a night owl (evening type): Westward travel suits owls because the body prefers delaying over advancing. A 1-hour westward shift typically clears in 1 days. Stay outside in the evening light at the destination and avoid early-morning bright light for the first three days.
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The great-circle distance from Sydney to Tokyo is about 7,826 kilometres. A typical non-stop flight takes around 10 hours at standard cruise speed; routes with connections add two to four hours.
Tokyo is currently 1 hour behind Sydney. Only one of the two cities observes daylight saving time, so the offset between them shifts by one hour twice a year. If you have recurring meetings on this route, double-check the local time around the DST transitions (March and October/November in the northern hemisphere).
Westward travel — which this route is — is the easier direction. Your body delays its clock, which is closer to its natural tendency. Most travellers clear a 1-hour westward shift in 1 days.
For a shift of 1 hour, 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.
For a shift under two hours, pre-trip adjustment is usually not worth the effort.
Owls (evening types) recover faster on westward routes because the body prefers delaying over advancing. Larks may overshoot — they should stay up later than they feel like at the destination for the first two nights.