AWS SDK for .NET Documentation
DurationSeconds Property
AmazonAmazon.SecurityToken.ModelGetFederationTokenRequestDurationSeconds Did this page help you?   Yes   No    Tell us about it...
Gets and sets the property DurationSeconds.

The duration, in seconds, that the session should last. Acceptable durations for federation sessions range from 900 seconds (15 minutes) to 129600 seconds (36 hours), with 43200 seconds (12 hours) as the default. Sessions obtained using AWS account (root) credentials are restricted to a maximum of 3600 seconds (one hour). If the specified duration is longer than one hour, the session obtained by using AWS account (root) credentials defaults to one hour.

Declaration Syntax
C#
public int DurationSeconds { get; set; }

Assembly: AWSSDK (Module: AWSSDK) Version: 1.5.60.0 (1.5.60.0)