"Mon, 15 Apr 2024 20:20:17"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240415
Only TIME
20:20:17
General datetime
2024-04-15 20:20:17Z
For Database
2024-04-15 20:20:17
For HTTP1.1
Mon, 15 Apr 2024 20:20:17 GMT