Carbon – get first day of month Post author By Mubarak Hossain Post date December 21, 2021 Code Answer: Carbon first day of month. First day of month date string. $startDate = Carbon::now()->startOfMonth()->toDateString(); //Output: 2021-01-01 First day of month date-time string. $startDateTime = Carbon::now()->startOfMonth()->toDateTimeString(); //Output: 2021-01-01 00:00:00 First day of month timestamp $startDateTimestamp = Carbon::now()->startOfMonth()->timestamp; //Output: (1609459200)