"Sat, 15 Jun 2024 13:21:52"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240615
Only TIME
13:21:52
General datetime
2024-06-15 13:21:52Z
For Database
2024-06-15 13:21:52
For HTTP1.1
Sat, 15 Jun 2024 13:21:52 GMT