@martinbean Update: From some reason the input time string is not matching the format. I tried both HH:MM and HH:mm, when I dd the $request->start_time for example, the string is "11:22" yet it does not match
@PovilasKorop could be, but I also wanna make sure the time is valid HH:mm. In this case I am trying to use the rule suggested by @martinbean, or, since it's a simple string I might do it with regex