"Sat, 15 Jun 2024 12:36:14"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240615
Only TIME
12:36:14
General datetime
2024-06-15 12:36:14Z
For Database
2024-06-15 12:36:14
For HTTP1.1
Sat, 15 Jun 2024 12:36:14 GMT