[Rule 19's FANTASTIC calendar], perhaps the best one in the state for EVERYTHING...it's not specific to any one venue or group. GET ON IT! The corresponding email list (which doesn't always have everything on this calendar, by the way), but the email list "to be on" is the Act-MA.org list. Thanks to PF Soto for keeping this calendar stuff to the gils with great stuff to do!
[Encuentro 5's calendar] is primarily stuff at that location or that the org is co-sponsoring, but still great. That page also has other calendars to check out. We can't keep up with them, so make sure you do!