Biggest races for April:

Sydney
Apr 1 - Rosehill Guineas (G1 3YO 2000m $500,000)
Apr 8 - The Golden Slipper (G1 2YO 1200m $3,000,000)
Apr 8 - The BMW (G1 2400m $2,000,000)
Apr 8 - George Ryder Stks (G1 1500m $400,000)
Apr 8 - Queen Of The Turf Stks (G1 F&M 1500m ($400,000)
Apr 8 - Arrowfield Stud Stks (G1 3YOf 2000m $400,000)
Apr 15 - AJC Australian Derby (G1 3YO 2400m $2,000,000)
Apr 15 - TJ Smith Stks (G1 1200m $600,000)
Apr 15 - Sires Produce Stks (G1 2YO 1400m $450,000)
Apr 17 - Doncaster Hcp (G1 1600m $2,000,000)
Apr 19 - AJC Australian Oaks (G1 3YOf 2400m $700,000)
Apr 19 - The Galaxy (G1 1100m $375,000)
Apr 22 - Sydney Cup (G1 3200m $800,000)
Apr 22 - Queen Elizabeth Stks (G1 2000m $800,000)
Apr 22 - Champagne Stks (G1 2YO 1600m $450,000)
Apr 22 - All Aged Stks (G1 1400m $400,000)

Adelaide
Apr 29 - Schweppes Oaks (G1 3YOf 2000m $250,000)