Amazon with BN-Link has the BN-Link 24-Hour Outdoor ETL-listed Multi-Socket Mechanical Timer (Green; BNC-U3) for $25 - $5 off coupon (clip coupon to apply) = $20 with free shipping on $35+ or with Prime.

Has 6 grounded sockets and up to 48 on/off programs, programmable in 15-minute invervals. Programs repeat every 24 hours. Use for outdoor lights, sprinklers, pool pumps, and more.