There were 5 main purposes for the meetings in the house of lords.
First and foremost were for approving new bills, such as public policy recommended by the ministries.
Second, for approving the recommended appropriation of national budget.
Third, for when there's trial against a member of the peerage.
Fourth, for in-depth consideration of public policy by the ministries.
Last, to crosscheck the activities of the ministries and the landed peers.
With all these identified, sessions have a fixed schedule. Every year, it would start in Mid- June and then end in October. It would be held once or twice a week. Then, on need basis, there could also be some intersessions in between.