"Mon, 19 Feb 2024 06:23:21"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240219
Only TIME
06:23:21
General datetime
2024-02-19 06:23:21Z
For Database
2024-02-19 06:23:21
For HTTP1.1
Mon, 19 Feb 2024 06:23:21 GMT