"Sat, 15 Jun 2024 19:59:55"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240615
Only TIME
19:59:55
General datetime
2024-06-15 19:59:55Z
For Database
2024-06-15 19:59:55
For HTTP1.1
Sat, 15 Jun 2024 19:59:55 GMT