"Sat, 15 Jun 2024 09:08:39"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240615
Only TIME
09:08:39
General datetime
2024-06-15 09:08:39Z
For Database
2024-06-15 09:08:39
For HTTP1.1
Sat, 15 Jun 2024 09:08:39 GMT