"Mon, 20 May 2024 12:35:10"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240520
Only TIME
12:35:10
General datetime
2024-05-20 12:35:10Z
For Database
2024-05-20 12:35:10
For HTTP1.1
Mon, 20 May 2024 12:35:10 GMT