"Sat, 15 Jun 2024 23:19:04"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240615
Only TIME
23:19:04
General datetime
2024-06-15 23:19:04Z
For Database
2024-06-15 23:19:04
For HTTP1.1
Sat, 15 Jun 2024 23:19:04 GMT