Archon ,

Questions below might seem like stupid .Even if I've played this game for long time , I haven't given it much thought. So Here are the questions .

1) How often a pantheon spawn ?

2) How many pantheons spawn at a time ?

3) When did the last pantheon spawn took place ? (Original version of this question is when the next pantheon spawn happens? :-) LOL)

Thank you in advance.