I'm not one for numbers or sequences of numbers for that matter. Geometric Progression was one of the many dreaded topics in the equally dreaded A. Maths back in secondary school.
But even I have to admit 09.09.09, 90 has a very nice ring to it. All '9's and '0's, the first and last single digit integers, a sequence rich in symbolism. A unique sequence for a unique woman. A woman I have always adored and will always adore. An immutable bond cherished for so long which grows more painfully precious with each passing year.
Happy 90th Birthday Mama.