"Fri, 21 Jun 2024 07:40:49"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240621
Only TIME
07:40:49
General datetime
2024-06-21 07:40:49Z
For Database
2024-06-21 07:40:49
For HTTP1.1
Fri, 21 Jun 2024 07:40:49 GMT