✈️ Jet Lag Recovery Calculator for 5 Time Zones
How long will it take to feel normal again after your flight?
Quick answer
Crossing 5 time zones typically takes around 5 days to fully recover from, travelling eastbound. Westbound is usually a bit quicker.
- Eastbound: ~5 days
- Westbound: ~4 days
- Shift sleep by 1h/day before you travel
- Get morning daylight on arrival
In detail: Jet Lag Recovery Calculator for 5 Time Zones
Crossing 5 time zones typically takes around 5 days to fully recover from, travelling eastbound. Westbound is usually a bit quicker. That's the core number — but the useful context is how sensitive it is to the inputs. Change any one of the assumptions by even 10–20% and the final figure can move meaningfully, which is why a calculator like this is better than a rule-of-thumb memorised from a magazine article.
Looking at the alternate scenarios below, the spread tells you how robust (or fragile) your answer is: if small changes produce big swings, plan for the pessimistic case; if it's stable across the range, you can commit more confidently.
What this tool helps with
Estimated recovery time in days
What you can enter
- Time zones crossed: 5
- Travel direction: East (e.g. US to UK)
Why this page is useful
How long will it take to feel normal again after your flight? This page loads fast, gives a direct answer, and then expands with useful context instead of burying the result under filler.