"Mon, 27 May 2024 23:18:48"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240527
Only TIME
23:18:48
General datetime
2024-05-27 23:18:48Z
For Database
2024-05-27 23:18:48
For HTTP1.1
Mon, 27 May 2024 23:18:48 GMT