Maydays is a charity 10-day convention being sponsored by Fantasy Grounds this year.

They raise money for good causes including food banks and homeless shelters. Please note, you do need to purchase an event ticket and tickets for your chosen games. (again, the event is a charity event)

This is a multi-VTT event, but there are several Fantasy grounds tables.

DMs running FG are populating their games in the following sheet for the 10-day conventions to make finding those games easier:
https://bit.ly/maydays2021-fg