The fun thing about time zones is if you live in an earlier time zone your life is lived out later.
Germany is GMT+1 and Californa is GMT-8.

When GMT is 20.00 its (19+1=) 21.00 in the evening in germany and only (20-8=) 12.00 and noon in california.

So while their 01 of february are long from over - your 01 of february is nearing its end.
Calirfornians live out their day of 01 february later then germans.