"Sat, 15 Jun 2024 17:02:39"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240615
Only TIME
17:02:39
General datetime
2024-06-15 17:02:39Z
For Database
2024-06-15 17:02:39
For HTTP1.1
Sat, 15 Jun 2024 17:02:39 GMT