"Mon, 19 Aug 2024 21:40:02"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240819
Only TIME
21:40:02
General datetime
2024-08-19 21:40:02Z
For Database
2024-08-19 21:40:02
For HTTP1.1
Mon, 19 Aug 2024 21:40:02 GMT