Thanks John
You are awesome. The code works if I put repeater field name as start_date, all the start_date rows are deleted whether the date is valid or not, it deletes everything, may be the time() function and strtotime() are not in sync, My date output format is default Ymd format, but I would like to know if you please, I have a Nested Structure MY ACF field Name is Sub Seminars ,then I have another sub seminars field inside which is a repeater field containing Start_date and End_date.
I only need some tweaks in the code that you provided so generously to get it working.
Thanks for the reply.
