Show invitation sent time in calendar invitation
If you are viewing your calendar it shows all items in the view, including those that are received in your inbox, but not responded to. And they all appear as tentative in the view. But if you open them from the calendar you have no way to know when they were sent. That is the invitation sent time is not part of the view.
But that means if I have multiple overlapping invitations and I want to fair and accept the first one I cannot work out which it is except by manually going through my Inbox to find it.
Therefore in the Invitation window, along with the Organizer and Duration, etc., there should also be the time the invitation was sent.