This question keeps coming up.
The default value for TokenLifetime on a RP trust is 0. But what value is 0?
As usual, a heap of garbage via Google.
60 minutes, 300 minutes, 600 minutes, 10 hours ...
Using ADFS 4.0 and looking at a SAML RP, we get:
So the correct answer is 1 hour = 60 minutes.
Note: Don't confuse this with the ADFS wide WebSSOLifetime. This is a server wide timeout parameter.
The default value for that = 8 hours = 480 minutes.