Hi @huwrowlands
Could you please tell me which version of ACF did you use? The date picker field in ACF PRO version saves the data in Ymd (yyyymmdd) format, so you need to reformat your $mon
variable to Ymd. Please take a look at this page to learn how to convert it: http://stackoverflow.com/questions/2487921/convert-date-format-yyyy-mm-dd-dd-mm-yyyy.
Thanks 🙂