I'm going to Prague for X-mas and I just read that the Kbely aviation museum is closing its doors in October 'till May!

I mean, that can't be!

I'm looking for locals who could tell me what strings I should try to pull to get the doors open for one precious day after 19th of December!
I'll try to look for the said strings myself but any help is apprciated!
I've been meaning to go for more than last 15 years...it can't be closed when I'm finally visiting Prague!
The museum is open in the summer season, i.e. from May till October, every day except Monday from 10.00 AM to 6 PM. http://www.vhu.cz/english-summary/