It's not just the GP. I've done both US Eastern to EU and US Eastern to US Pacific enough times to know how I respond.
I find the 3 hour difference to the west coast to be way harder to adjust to than the 5 or 6 hour (depending on destination) difference to Europe. I'm a zombie for a week going to California and spring right back to eastern time going home.
Going to Europe, it's about a day to fully kick over to the time change in either direction. Admittedly, it's a rough day headed east that usually involves an afternoon nap, but I've come to despise the three hour change to Pacific time far more.
I find the 3 hour difference to the west coast to be way harder to adjust to than the 5 or 6 hour (depending on destination) difference to Europe. I'm a zombie for a week going to California and spring right back to eastern time going home.
Going to Europe, it's about a day to fully kick over to the time change in either direction. Admittedly, it's a rough day headed east that usually involves an afternoon nap, but I've come to despise the three hour change to Pacific time far more.