"Mon, 27 May 2024 18:05:23"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240527
Only TIME
18:05:23
General datetime
2024-05-27 18:05:23Z
For Database
2024-05-27 18:05:23
For HTTP1.1
Mon, 27 May 2024 18:05:23 GMT