Collective Birthday Calendar

Our Birthday

PC version. Mobil friendly version.

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The main idea of the Collective Birthday Calendar is to calculate the common birthdate of many people together. The program is able to calculate the average birthday of 2-30 people collectively, up to the 2000th birthday.

Let me quote the ancient philosopher, Democritus: „Life without celebrations is a long journey without rest.

I can highly recommend this new "Collective Birthday Calendar and I wish you good luck and many happy "collective" birthdays!

July 4, 2012, Budapest, Hungary

Jozsef Antal Biro
P. S. This website was published on April 7, 2010 in Hungary.
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