"Mon, 20 May 2024 19:16:27"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240520
Only TIME
19:16:27
General datetime
2024-05-20 19:16:27Z
For Database
2024-05-20 19:16:27
For HTTP1.1
Mon, 20 May 2024 19:16:27 GMT