"Sat, 15 Jun 2024 20:05:09"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240615
Only TIME
20:05:09
General datetime
2024-06-15 20:05:09Z
For Database
2024-06-15 20:05:09
For HTTP1.1
Sat, 15 Jun 2024 20:05:09 GMT