Not a big fan of calling out birthdays and such. But it has been ten years since this and 35 altogether. So much has changed and to that note so much has not changed. As in corporate speak, let’s do some high level numbers –

From and including: Monday, March 21, 1977
To, but not including : Wednesday, March 21, 2012

It is 12,784 days from the start date to the end date, but not including the end date
Or 35 years excluding the end date

Alternative time units –
12,784 days
1,104,537,600 seconds
18,408,960 minutes
306,816 hours
1826 weeks (rounded down)