"Mon, 20 May 2024 04:40:57"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240520
Only TIME
04:40:57
General datetime
2024-05-20 04:40:57Z
For Database
2024-05-20 04:40:57
For HTTP1.1
Mon, 20 May 2024 04:40:57 GMT