"Mon, 20 May 2024 18:24:10"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240520
Only TIME
18:24:10
General datetime
2024-05-20 18:24:10Z
For Database
2024-05-20 18:24:10
For HTTP1.1
Mon, 20 May 2024 18:24:10 GMT