"Sat, 15 Jun 2024 05:47:18"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240615
Only TIME
05:47:18
General datetime
2024-06-15 05:47:18Z
For Database
2024-06-15 05:47:18
For HTTP1.1
Sat, 15 Jun 2024 05:47:18 GMT