Read both clocks before planning sleep.
| SEA clock | CDG clock | Destination date |
|---|---|---|
| 07:00 | 15:00 | Oct 26 |
| 12:00 | 20:00 | Oct 26 |
| 18:00 | 02:00 | Oct 27 |
| 22:00 | 06:00 | Oct 27 |
January 15, 2027: +9 hours; July 15, 2027: +9 hours (destination minus origin). These two seasonal examples have the same difference; always check your own travel date.
Eastward travel often asks for an earlier body-clock schedule. A smaller pre-trip advance can help some travelers, while a late bedtime in the departure city may make the first local night harder.
An example shape for this trip.
An educational example, not a personal schedule. Precise light timing depends on your internal clock as well as the itinerary.
Two or three days before departure
Look at the SEA evening row above beside the CDG clock. If feasible, make a modest sleep-schedule shift toward your destination without cutting your sleep short.
Flight day
Keep the ticket’s SEA departure date and CDG arrival date visible. Plan a realistic opportunity to rest; avoid relying on alcohol for sleep. Caffeine close to intended sleep can make rest harder.
First local day
Use Paris local time for meals, activities and the coming bedtime. This is a substantial clock change. Build rest around your actual arrival hour, and leave room for a less demanding first local day. A universal morning-light instruction can be mistimed for some travelers.
Following days
Recheck how rested you feel before adding demanding activities. General advice is not a promise of a fixed adjustment time; use your personalized schedule and clinical guidance when appropriate.
Sources · CDC jet lag guidance · Airline route/network reference · checked 2026-10-26
Airline service and dates can change. This is a travel-planning guide, not a timetable or a claim that a nonstop flight operates on your date. Flight-duration estimates are omitted.
A few useful answers.
What is the SEA to CDG time difference?
On 2026-10-26, Paris is 8 hours ahead of Seattle. Seasonal offset examples: January 15, 2027: +9 hours; July 15, 2027: +9 hours (destination minus origin). These two seasonal examples have the same difference; always check your own travel date.
Is this an eastward trip?
The shorter geographic direction from SEA to CDG is eastward. Direction and civil-clock offset are different concepts, especially around the date line. Neither alone determines your personal light schedule.
Is the sample a personal plan?
No. It is an educational outline, not advice for your sleep schedule or health. The app uses your itinerary and usual sleep to create a plan; your first complete itinerary is free.