"Sat, 15 Jun 2024 14:12:24"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240615
Only TIME
14:12:24
General datetime
2024-06-15 14:12:24Z
For Database
2024-06-15 14:12:24
For HTTP1.1
Sat, 15 Jun 2024 14:12:24 GMT