"Mon, 03 Jun 2024 20:21:15"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240603
Only TIME
20:21:15
General datetime
2024-06-03 20:21:15Z
For Database
2024-06-03 20:21:15
For HTTP1.1
Mon, 03 Jun 2024 20:21:15 GMT