How do I check when my month ends? For Math stack exchange I recently got the 50 questions a month limit, just wondering how to check.
There's no "end of month" date. It's a rolling check. So, you won't be able to ask new questions until you have fewer than 50 questions that are 30 days old or younger.
So, in your list of questions, make sure they're sorted by "newest" and keep going back until you get to 30 days before today. You should also be able to work out when questions will start to "age out".
And, perhaps, you'll be more selective in asking questions in the future.
See also: 50 question per month limit?