Solved: Remove "for" from Tribe Events Calendar month view
Need to edit the month view page title in the Tribe Events calendar?
Look for this file in your webserver:
Near rows 150 find the function tribe_is_month. There you will find the hard coded "for"
Pretty hard to solve if plugin creators hard-code language strings. Otherwise the plugin works and is a really awesome free addon to many WordPress sites.
Cracked my head a couple of hours for this and if this helps you, please leave a comment, thanks.