The problem with this request is that the MOTD is just a text file.
There is no way to build an app inside the MOTD just to tell you what time it is, or how long till an event starts. What event is coming, yes, that is doable with what we have, if the CM's choose to do so.
The burden lies on us as individuals, if we choose to fly in special events, to know what the time difference is. And to remind ourselves to be there early or on time.
Part of the problem is that the time is so screwed up between shifting times, daylight savings time, changing dates, that there is no really good time app that I know of that can deal with all of it correctly.