"Sat, 15 Jun 2024 20:19:52"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240615
Only TIME
20:19:52
General datetime
2024-06-15 20:19:52Z
For Database
2024-06-15 20:19:52
For HTTP1.1
Sat, 15 Jun 2024 20:19:52 GMT