"Sat, 15 Jun 2024 06:37:42"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240615
Only TIME
06:37:42
General datetime
2024-06-15 06:37:42Z
For Database
2024-06-15 06:37:42
For HTTP1.1
Sat, 15 Jun 2024 06:37:42 GMT