"Sun, 19 May 2024 22:21:14"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240519
Only TIME
22:21:14
General datetime
2024-05-19 22:21:14Z
For Database
2024-05-19 22:21:14
For HTTP1.1
Sun, 19 May 2024 22:21:14 GMT