"Mon, 20 May 2024 10:51:48"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240520
Only TIME
10:51:48
General datetime
2024-05-20 10:51:48Z
For Database
2024-05-20 10:51:48
For HTTP1.1
Mon, 20 May 2024 10:51:48 GMT