"Sat, 15 Jun 2024 19:35:51"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240615
Only TIME
19:35:51
General datetime
2024-06-15 19:35:51Z
For Database
2024-06-15 19:35:51
For HTTP1.1
Sat, 15 Jun 2024 19:35:51 GMT