Opening night for Churchill Downs is Saturday, which marks the start of the Spring Meet.The theme for Opening Night is "Derby Through the Decades."For the first time, post positions for Kentucky Derby 150 and Oaks will be drawn on Opening Night.There will be 10 races Saturday night, with the first one taking off at 6 p.m. The post positions, aka the Pill Pull, will happened between Races 3 and 4.In addition to the racing and Pill Pull, there'll be a few other special happenings to kick off the Spring Meet.At 8:40 p.m. at the Kentucky Derby Red Carpet, there will be the Rodes For Him/For Here Fashion Experience. Fans will get a glimpse of Derby trends for this year.In the Clubhouse Corridor, there will be art pieces from KMAC Couture's "Runway for the Roses," where regional artists will have their Derby-inspired couture on display.DJ Sam Sneed will be the entertainment for the night.Tickets for Opening Night can be purchased here.Here's some other key dates during the Spring Meet:Sunday, April 28 and Monday, April 29 - Dawn at the DownsTuesday, April 30 - 502'sDayWednesday, May 1 - Champion's DayThursday, May 2 - ThurbyFriday, May 3 - Kentucky OaksSaturday, May 4 - Kentucky Derby 150Thursday, May 9 - Twilight Thursday startSunday, May 12 - Mother's Day Saturday, May 18 - First Downs After DarkMonday, May 27 - Military Appreciation DaySunday, June 9 - Family Adventure DaySunday, June 16 - Father's DaySaturday, June 29 - Stephen Foster DaySunday, June 20 - Last Day of Spring MeetRaces are run on Wednesdays-Sundays from April 27 through June 30 for the Spring Meet.To see a complete calendar of events for Churchill's Spring Meet, click here.