"Sat, 15 Jun 2024 16:21:26"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240615
Only TIME
16:21:26
General datetime
2024-06-15 16:21:26Z
For Database
2024-06-15 16:21:26
For HTTP1.1
Sat, 15 Jun 2024 16:21:26 GMT