"Mon, 13 May 2024 12:44:21"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240513
Only TIME
12:44:21
General datetime
2024-05-13 12:44:21Z
For Database
2024-05-13 12:44:21
For HTTP1.1
Mon, 13 May 2024 12:44:21 GMT