In Pokemon-Go are eggs from gifts predetermined before you open the gift?
Looking for the ultra bonus of September 2018 with Kanto regional pokemon on 7KM eggs I want to save egg space hatching current ones and not taking more, and also I am not opening gift from friends until the event.
If I open the gift (and give me eggs) on september 13th will be determined the pokemon using the event at the moment? Or are they determined the day the gift is sent?