"Mon, 13 May 2024 18:54:27"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240513
Only TIME
18:54:27
General datetime
2024-05-13 18:54:27Z
For Database
2024-05-13 18:54:27
For HTTP1.1
Mon, 13 May 2024 18:54:27 GMT