***** NOT A TEACHER *****
Hello, EnglishHobby:
Teachers always remind us that context is king in English. That is to say, everything depends on the particular situation.
So I believe that MAYBE (for at least some speakers) there could be a slight difference sometimes.
*****
James (telephones City Hall, the building where the city leaders work): Does the board meet today? [referring to a permanent situation]. I know that it meets once a week, but I keep forgetting on which day.
Telephone operator: No, sir. It doesn't. Today is Wednesday. The board always meets on Mondays, not on Wednesdays.
James: Oh, that's right. Now I remember. Sorry to bother you.
*****
Mona: I know that the board always meets on Mondays and that this is only Wednesday, but I heard on the news last night that the board was thinking about meeting today, too. Is the board meeting today? [referring to a temporary situation]
Telephone operator: Yes, ma'am. It is meeting at this very moment. [referring to an action in progress.] It will last for one more hour.
Mona: Thanks. I'll hurry down to City Hall because I have some business to discuss with the board members.
Sources: Michael Swan, Practical English Usage (1995); Walter Kay Smart, English Review Grammar (1940; copyright renewed in 1968).