"Sat, 15 Jun 2024 17:31:31"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240615
Only TIME
17:31:31
General datetime
2024-06-15 17:31:31Z
For Database
2024-06-15 17:31:31
For HTTP1.1
Sat, 15 Jun 2024 17:31:31 GMT