Thanks for the reply weekend_junkie
The March date is coincedence, but nothing more.
Coincidence with what?
That registration expired March 30, 1980.
I realise it expired then but where would that date come from;
- the original registration date
- the month of the owners birth
- some other date
Ha, coincedence with YOUR birthday!
The owner originally registered that bike in March of what ever year (1976, 1979,

). If its sold, the renewal date gets reset to the month that new owner first registers it.
Frankly, the whole birthday thing in Florida sounds like a pain. I would get ripped off if I bought a bike a month before my birthday and had to renew 30 days later.