There are important occurrences in life that happen only ” once in a blue moon” . This was the case between an uncle and a niece- my third child born May 31, 1980 and my first grandchild born May 31, 2017 ( thanks to caesarean operation actual birth can be postponed if only
for a day or two and of course thanks to the new parents who like their first baby to be a Math wizard like her uncle).
These are birthdays indeed which are best days!