CIRCADIAN TRAVEL ADVISOR
Circadian Jet Lag & Sleep Shift Calculator
Plan your sleep transition schedule across international time zones. Based on peer-reviewed circadian biology protocols from NASA and the American Academy of Sleep Medicine (AASM).
Time Zone Difference6 Hours Shift
1h (Regional)6h (Transatlantic)14h (Transpacific)
Estimated Full Acclimatization
7days to 100% natural synchronization
Light Seeking Window
Morning: 07:30 – 11:30 (Seek bright sunlight to shift clock forward)
Light Avoidance Protocol
Evening: Wear sunglasses or dim screens after 19:00
Caffeine Cutoff
Stop caffeine by 13:00 destination time to prevent delaying sleep
OFFLINE TRAVEL VAULT
Flying abroad? Keep tickets, visas, and passport scans safe offline.
When you land in a foreign airport without mobile data or airport Wi-Fi, cloud document apps fail to load. Subra Travel Space stores boarding passes, itineraries, and family identity documents encrypted on your phone with zero reliance on cellular networks.
100% Airplane Mode Ready AES-256 Vault Encryption Emergency Vitals Passport