"Sat, 15 Jun 2024 15:59:13"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240615
Only TIME
15:59:13
General datetime
2024-06-15 15:59:13Z
For Database
2024-06-15 15:59:13
For HTTP1.1
Sat, 15 Jun 2024 15:59:13 GMT