Since the Windows date system begins with # 1 on January 1, 1900, can negative numbers be used for dates in the 1800's and earlier? If not, is there a workaround or add-on which enables earlier dates to be used in Excel charts & formulas, etc?
I began adding 2000 to all years whenever dates prior to 1900 are present in a range of values. Then, I would just need to remember to subtract 2000 whenever the date was to be displayed. I think that's accurate considering the rules for leap year
but doing that is a couple of extra steps and it would be nice if there is a simpler way to handle that situation.