"Mon, 13 May 2024 12:13:42"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240513
Only TIME
12:13:42
General datetime
2024-05-13 12:13:42Z
For Database
2024-05-13 12:13:42
For HTTP1.1
Mon, 13 May 2024 12:13:42 GMT