Casper, the Three Flags Classic ride is ALWAYS over the long weekend of Labor Day weekend, every year.
If you look at any calendar year, and see the THURSDAY before Labor Day weekend, that will always be the day that the Registration Desk will be open at the Start hotel, meaning...that is the day you need to Check-In at the Start hotel...with the Three Flags Classic desk.
You can always show up at the Start hotel a day or more early, if you wish to, as many of us like to visit olde friends for an extra day, before doing the ride.
Then, looking back at that same calendar, for the year 2020, the ride will officially END, or FINISH, on the TUESDAY immediately following Labor Day. Since Labor Day is officially on a Monday, then for 2020...the official FINISH of the Three Flags Classic will be the next day, on that TUESDAY. And the FINISH Banquet will be on Wednesday evening, and riders will leave...to ride home....or points beyond, on Thursday morning.
In the years 2021, 2022, 2023, and 2024, on all those years, the ride will officially FINISH on Monday, which is Labor Day. The Finish Banquet will be on Tuesday evening, and riders will leave to ride home, or points beyond, on Wednesday morning.
What is the difference? (you ask)
Every 5th year, such as 2015, 2020, 2025, etc.....we have an extra day of riding, extra miles on the Route, and the Finish is one day later, which means the Finish Banquet is one day later.
Make sense ?