Port is long mature.
Vintage Port is considered the King of the Port.
Would you drink a Vintage port, leave the bottle upright for 24 hours. Sediment drops to under. Decanter than the vintage port (showering in a karaaf). Is advisable to leave 1 small glass of the bottle (depot).
A Vintage by 36-45 year (s) old: decanting 3-5 hours in advance
A Vintage by 46-60 year (s) old: decanting 2-3 hours in advance