"Sat, 15 Jun 2024 12:35:54"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240615
Only TIME
12:35:54
General datetime
2024-06-15 12:35:54Z
For Database
2024-06-15 12:35:54
For HTTP1.1
Sat, 15 Jun 2024 12:35:54 GMT