"Sat, 15 Jun 2024 23:49:51"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240615
Only TIME
23:49:51
General datetime
2024-06-15 23:49:51Z
For Database
2024-06-15 23:49:51
For HTTP1.1
Sat, 15 Jun 2024 23:49:51 GMT