I do not know if it has been done, i had a look and could not find it (if it has sorry, i was not wearing my glasses )
But what about writing down our babies birthday date as quite a few of us will have their LO's birthdays coming up around christmas and after.

Thomas was born the 22nd of December 2005

Summer sept 4th 2005

16 december 2005

Jamies is 30th August (2005)

26th December 2005

Alisha is 16th August and Gabriel is 27th August.

Rebecca is 3rd February

Braydon is the 28th sep 2005

alexis is dec 7th 2005

jordans birthday is 2nd march

lily-maes is 5th april