@Override
    protected ZonedDateTime determineInitialDateTime(final RegisteredService registeredService, final AuthenticationAwareTicket ticketState) {
        return ticketState.getAuthentication().getAuthenticationDate();
    }
This is {@link AuthenticationDateRegisteredServiceSingleSignOnParticipationPolicy}.

@author Misagh Moayyed
@since 6.1.0
core/cas-server-core-services-api/src/main/java/org/apereo/cas/services/AuthenticationDateRegisteredServiceSingleSignOnParticipationPolicy.java