Today, 11/12/13, is a great day partly because it is a sequence and mostly because it is my sister Cindy’s birthday. My other sister Elaine had her sequence day three years ago on 8/9/10. 

Cindy pointed out that lots of people are lining up to get married next year on 12/13/14 thinking it is the last sequence day of the century.  Just for some precision, note that it is the last sequence of one; the last sequence of any kind will be 12/31/50 – a sequence of 19.

This gives some hope to my brother Scott, who can claim 8/17/26 as his sequence (of 9) day.

Alas, I am not sure what someone with a November 5 birthday is to do.  11/5/17 has all the numbers for a sequence of 6 (and a halfback day!), but in the wrong order.  11/5/-1 might be interpreted as 11/5/99 in some negativo universe. 

I guess some birthdays just don’t get sequence days.