"Sun, 16 Jun 2024 08:55:21"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240616
Only TIME
08:55:21
General datetime
2024-06-16 08:55:21Z
For Database
2024-06-16 08:55:21
For HTTP1.1
Sun, 16 Jun 2024 08:55:21 GMT