"Sun, 19 May 2024 11:21:02"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240519
Only TIME
11:21:02
General datetime
2024-05-19 11:21:02Z
For Database
2024-05-19 11:21:02
For HTTP1.1
Sun, 19 May 2024 11:21:02 GMT