Good call! Never too early to plan.
In case helpful, here were the June 2017 dates:
2017 June EMM Dates
Sunday, June 11, 2017
Sunday, June 18, 2017
Sunday, June 25, 2017
To answer your question about April and May, there were a few in 2017:
Tuesday, April 25, 2017
Tuesday, May 2, 2017
Tuesday, May 9, 2017
Tuesday, May 16, 2017
But, as you know the only thing consistent about EMM dates is the inconsistency…. so who the heck knows what’s in store for 2018!
FWIW, the EMMs since 4/10/18 have been being released/made available for booking on a rolling basis at the 180 mark. If that trend holds we’ll start seeing dates in a few weeks.
Hope that helps. I’ll be watching with you!