"Mon, 27 May 2024 18:23:10"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240527
Only TIME
18:23:10
General datetime
2024-05-27 18:23:10Z
For Database
2024-05-27 18:23:10
For HTTP1.1
Mon, 27 May 2024 18:23:10 GMT