Two things:
1. You may wash for the seuda on Friday afternoon until sha’a asiris – the beginning of the tenth halachic hour of the day. A halachic hour is the time between sunrise and sunset divided by 12.
2. more_2: I’m not sure if you were joking, but in case you weren’t, you have a seuda on Shushan Purim if you live in Yerushalayim since that is when Purim is there.
Happy Purim!