"Mon, 27 May 2024 14:10:11"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240527
Only TIME
14:10:11
General datetime
2024-05-27 14:10:11Z
For Database
2024-05-27 14:10:11
For HTTP1.1
Mon, 27 May 2024 14:10:11 GMT