Honestly, your best bet is to check their 'Auction Calendar' on the site because they have stuff running almost every day across different regions.
If you're looking for the big one, the Orlando Florida auction usually kicks off in mid-to-late February-that's the massive multi-day event where they move thousands of pieces of heavy iron.
Quick tips if you're new to it:
Register early: Don't wait until the day of.
Check the 'IronClad Assurance': It's a lifesaver for seeing the inspection reports if you can't get to the yard in person.
Watch the fees: Remember to factor in the buyer's premium and taxes on top of your winning bid!
Are you looking for something specific, like yellow iron or just farm gear?