"Mon, 19 Aug 2024 15:40:10"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240819
Only TIME
15:40:10
General datetime
2024-08-19 15:40:10Z
For Database
2024-08-19 15:40:10
For HTTP1.1
Mon, 19 Aug 2024 15:40:10 GMT