Especially with the long time game worlds it would be nice if the internal time system overview ( http://www.airwaysim.com/game/ClockPopup/
) be extended with a calendar, so you know for example what day a specific day is.
I mean, I expect all of you to know what a calendar is.
Additionally in this calendar informations could be included with mouse overs - like incoming D-Checks, new aircraft deliveries, next possible used aircraft purchase etc. combined with selection fields to turn on or off some of these informations (in an early game you want incoming aircraft marked there, in a late game maybe not anymore).
Alternatively this calendar could not only be positioned in the clock popup but also below the left navigation module.