day of fiscal year column

[JC2022]

I would like to create a day of fiscal year column.
My fiscal year starts the 1st of October. I have the date in a date column like 1-10-2016 and this should return value 1 which it does. The first of January 2017 should return value 93 but is returning -272.
Please see my power query formula below and help me out.

= Table.AddColumn(#"Changed Type", "Day of Fiscal Year", each Duration.Days([Date] - #date(Date.Year([Date]),10,1)) + 1)

[DOLEARY85]

Hi it looks like the year part of the calculation is wrong it always defaults to the year of the current column so for 01-01-2017 it compares that to 01-10-2017 instead of 01-10-2016

try this:

 = Table.AddColumn(#"Changed Type", "Day of Fiscal Year", each Duration.Days([Column1]- (if [Column1] < #date(Date.Year([Column1]),10,1) then #date(Date.Year([Column1])-1,10,1) else #date(Date.Year([Column1]),10,1)))+1)