I don't understand what you mean by average day of the month.
It will say for example, grant date = Dec 9, 2017.
Cost basis = 70 Euros
Valuation price = 90 Euros
Allocated = 14 shares
So I'm assuming I will look at your calculator for Dec 9, 2017 and do the conversion for 70 Euros (cost basis) to USD? Not the 90 Euros (valuation price)
