"Sat, 15 Jun 2024 14:12:35"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240615
Only TIME
14:12:35
General datetime
2024-06-15 14:12:35Z
For Database
2024-06-15 14:12:35
For HTTP1.1
Sat, 15 Jun 2024 14:12:35 GMT