"Sat, 15 Jun 2024 17:17:36"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240615
Only TIME
17:17:36
General datetime
2024-06-15 17:17:36Z
For Database
2024-06-15 17:17:36
For HTTP1.1
Sat, 15 Jun 2024 17:17:36 GMT