"Sat, 15 Jun 2024 17:57:40"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240615
Only TIME
17:57:40
General datetime
2024-06-15 17:57:40Z
For Database
2024-06-15 17:57:40
For HTTP1.1
Sat, 15 Jun 2024 17:57:40 GMT