Is it possible to create a countdown (counter / timer) before the start of an event (event) in VK?

Question

In contact with

And how to do it?
Any valid option for a group / public is suitable, but preferably on any VKontakte wall dynamic with the possibility of reposting.
Now I see a solution, but I can’t find it on the net:
Create an application that generates a GIF image with a countdown, but how it will be updated and reloaded, since it is unlikely to take all the information for a week at least ahead.
PS: The application in VK does not suit, it is necessary for all participants, and not just for me.

Answer 1

msdn.microsoft.com/ru-ru/library/5y289054(v=vs.110...
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vk.com/pages?oid=-1&p=%D0%94%D0%BE%D0%BA%D1%83 %D0%...