Jet Lag Calculator

Recovery days from zones crossed.

Time zones crossed

Direction

Recovery days6

DirectionEast

Time zones crossed6

175 available

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About this calculator

Jet-lag recovery days from time zones crossed and flight direction.

Rule?

About one day per zone eastbound, two zones per three days westbound.

East worse?

Yes — advancing the clock fights biology harder.

Speed it up?

Light, melatonin timing and pre-shifted sleep help.