Jet Zzz — Jet Lag PlannerJet Zzz is a free, browser-based jet lag planner that builds personalized sleep and activity schedules for travelers crossing time zones. Enter your flights, set your sleep profile, mark fixed activities, and get a day-by-day plan you can export to your calendar or PDF.Features

Multi-leg flight support with layovers

Personalized sleep and light exposure schedule

Day-by-day adaptation chart and world map visualization

Conflict detection against fixed activities

Export to .ics calendar and PDF

Available in English, Chinese, Japanese, Korean, French, German, Spanish, Italian, and Russian

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How to Use — step-by-step guide

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