"Sat, 15 Jun 2024 18:06:08"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240615
Only TIME
18:06:08
General datetime
2024-06-15 18:06:08Z
For Database
2024-06-15 18:06:08
For HTTP1.1
Sat, 15 Jun 2024 18:06:08 GMT