http://www.google.pl/logos/2011/grandparentsday11-hp.jpg

http://www.google.pl/search?q=Dzie%C5%84+Babci&ct=grandparentsday11-hp&oi=ddle

In fact, it was 'grandparents day 2011'

According to wikipedia, Poland celebrates January 21 as Grandmother's Day (Dzien Babci) and January 22 as Grandfather's Day (Dzien Dziadka).
http://en.wikipedia.org/wiki/National_Grandparents_Day

Then WebSonic.nl's title is correct :)