Let
// configurations start
FromYear = 2020, // set the start year of the date dimension. dates start from 1st of January of this year
ToYear=2021, // set the end year of the date dimension. dates end at 31st of December of this year

//ToDate = DateTime.Date(Date.EndOfYear(Date.AddYears(DateTime.LocalNow(),1)),
//dynamic to date

StartofFiscalYear=7, // set the month number that is start of the financial year. example; if fiscal year start is July, value is 7
firstDayofWeek=Day.Sunday, // set the week’s start day, values: Day.Monday, Day, Sunday…
// configuration end
FromDate=#date(FromYear,08,30),
ToDate=#date(ToYear,01,24),
Source=List.Dates( FromDate, Duration.Days(ToDate-FromDate)+1, #duration(1,0,0,0)),
#"Converted to Table" = Table.FromList(Source, Splitter.SplitByNothing(), null, null, ExtraValues.Error),
#"Renamed Columns" = Table.RenameColumns(#"Converted to Table",{{"Column1", "Date"}}),
#"Changed Type" = Table.TransformColumnTypes(#"Renamed Columns",{{"Date", type date}}),
#"Inserted Year" = Table.AddColumn(#"Changed Type", "Year", each Date.Year([Date]), Int64.Type),
#"Inserted Start of Year" = Table.AddColumn(#"Inserted Year", "Start of Year", each Date.StartOfYear([Date]), type date),
#"Inserted End of Year" = Table.AddColumn(#"Inserted Start of Year", "End of Year", each Date.EndOfYear([Date]), type date),
#"Inserted Month" = Table.AddColumn(#"Inserted End of Year", "Month", each Date.Month([Date]), Int64.Type),
#"Inserted Start of Month" = Table.AddColumn(#"Inserted Month", "Start of Month", each Date.StartOfMonth([Date]), type date),
#"Inserted End of Month" = Table.AddColumn(#"Inserted Start of Month", "End of Month", each Date.EndOfMonth([Date]), type date),

InsertIsEndOfMonth = Table.AddColumn(#"Inserted End of Month", "IsEndOfMonth", each if [Date] = [End of Month] then true else false, type logical),
InsertEndOfMonthDate = Table.AddColumn(InsertIsEndOfMonth, "EndOfMonth Date", each if [Date] = [End of Month] then [Date] else null, type date),

#"Inserted Days in Month" = Table.AddColumn(InsertEndOfMonthDate, "Days in Month", each Date.DaysInMonth([Date]), Int64.Type),
#"Inserted Day" = Table.AddColumn(#"Inserted Days in Month", "Day", each Date.Day([Date]), Int64.Type),
#"Inserted Day Name" = Table.AddColumn(#"Inserted Day", "Day Name", each Date.DayOfWeekName([Date]), type text),
#"Inserted Day of Week" = Table.AddColumn(#"Inserted Day Name", "Day of Week", each Date.DayOfWeek([Date]), Int64.Type),
#"Inserted Day of Year" = Table.AddColumn(#"Inserted Day of Week", "Day of Year", each Date.DayOfYear([Date]), Int64.Type),
#"Inserted Month Name" = Table.AddColumn(#"Inserted Day of Year", "Month Name", each Date.MonthName([Date]), type text),
#"Inserted Quarter" = Table.AddColumn(#"Inserted Month Name", "Quarter", each Date.QuarterOfYear([Date]), Int64.Type),
#"Inserted Start of Quarter" = Table.AddColumn(#"Inserted Quarter", "Start of Quarter", each Date.StartOfQuarter([Date]), type date),
#"Inserted End of Quarter" = Table.AddColumn(#"Inserted Start of Quarter", "End of Quarter", each Date.EndOfQuarter([Date]), type date),
#"Inserted Week of Year" = Table.AddColumn(#"Inserted End of Quarter", "Week of Year", each Date.WeekOfYear([Date],firstDayofWeek), Int64.Type),
#"Inserted Week of Month" = Table.AddColumn(#"Inserted Week of Year", "Week of Month", each Date.WeekOfMonth([Date],firstDayofWeek), Int64.Type),
#"Inserted Start of Week" = Table.AddColumn(#"Inserted Week of Month", "Start of Week", each Date.StartOfWeek([Date],firstDayofWeek), type date),
#"Inserted End of Week" = Table.AddColumn(#"Inserted Start of Week", "End of Week", each Date.EndOfWeek([Date],firstDayofWeek), type date),
FiscalMonthBaseIndex=13-StartofFiscalYear,
adjustedFiscalMonthBaseIndex=if(FiscalMonthBaseIndex>=12 or FiscalMonthBaseIndex<0) then 0 else FiscalMonthBaseIndex,
#"Added Custom" = Table.AddColumn(#"Inserted End of Week", "FiscalBaseDate", each Date.AddMonths([Date],adjustedFiscalMonthBaseIndex)),
    #"Added Custom1" = Table.AddColumn(#"Added Custom", "Year & Month", each Text.From([Month])&" "&Text.From([Year])),
    #"Changed Type1" = Table.TransformColumnTypes(#"Added Custom1",{{"FiscalBaseDate", type date}}),

#"Inserted Year1" = Table.AddColumn(#"Changed Type1", "Year.1", each Date.Year([FiscalBaseDate]), Int64.Type),
    #"Renamed Columns1" = Table.RenameColumns(#"Inserted Year1",{{"Year.1", "Fiscal Year"}}),
    #"Inserted Quarter1" = Table.AddColumn(#"Renamed Columns1", "Quarter.1", each Date.QuarterOfYear([FiscalBaseDate]), Int64.Type),
    #"Renamed Columns2" = Table.RenameColumns(#"Inserted Quarter1",{{"Quarter.1", "Fiscal Quarter"}}),
    #"Inserted Month1" = Table.AddColumn(#"Renamed Columns2", "Month.1", each Date.Month([FiscalBaseDate]), Int64.Type),
    #"Renamed Columns3" = Table.RenameColumns(#"Inserted Month1",{{"Month.1", "Fiscal Month"}}),
    #"Removed Columns" = Table.RemoveColumns(#"Renamed Columns3",{"FiscalBaseDate"}),
    #"Added Custom2" = Table.AddColumn(#"Removed Columns", "Year & week", each Text.From([Year])&" "&Text.From([Week of Year]))
in
    #"Added Custom2"