"Sat, 15 Jun 2024 19:52:16"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240615
Only TIME
19:52:16
General datetime
2024-06-15 19:52:16Z
For Database
2024-06-15 19:52:16
For HTTP1.1
Sat, 15 Jun 2024 19:52:16 GMT