Here is schedule clarity until changed specifically (accurate as of 05/03/2018):
Underrock Tavern - Tuesdays 9pmEST
PVE Time - Wednesdays 7pmEST
Ethereal Events - Wednesdays 10pmEST
Valiant Patrols - Thursdays 10pmEST
Dark Blade Events - every OTHER Thursday 7pmEST
Social Hour - Sundays 9pmEST
Enjin Calendar is /accurate/ for all months /other than/ November and March.