For some reason I have a very good memory for dates... I mean, important ones of course.
For instance, I flew the nest and moved into my (36/- a week) bedsit in York on Feb 2 1970... aged 18.
I had just missed qualifying for an '18th' birthday and adulthood at 18, because that wasn't introduced until Jan 1 1970... whereas my birthday was the previous September.
The following February ( Feb 15 1971) was decimalisation day, when we all had to get used to 100 'New Pence' to the pound, instead of 240 pennies.
It affected me directly, because on that day I was working my evening job on the tills in a pub on London's Fleet Street.
The dearest beer (Draught Guinness) had to be converted from one shilling and ninepence to 9 New Pence ... for a pint.