First post is 12:35 p.m. for the 12-race card. The Rainbow 6 is on races seven to 12.
The carryover, second highest in the bet's history, keeps growing because Saturday was the 48th straight day without the jackpot requirement of just one ticket with all six winners.
There were 12 tickets with all six winners, each paying $38,419.26.
Bettors added $825,492 to the Rainbow 6 pool on Saturday.
On Gulfstream will have a mandatory payout of the full Rainbow 6 carryover, even if there are multiple winning tickets.
The Rainbow 6 is a 20-cent only per combination bet, with a 20 percent takeout.