=FormatNumber(Year([DateObject]);"####")+LeftPad(1+DaysBetween(ToDate(FormatNumber(Year([DateObject]);"####");"yyyy");[DateObject])+"";3;"0")
[DateObject] is your date you want to convert.
=FormatNumber(Year([DateObject]);"####")+LeftPad(1+DaysBetween(ToDate(FormatNumber(Year([DateObject]);"####");"yyyy");[DateObject])+"";3;"0")
[DateObject] is your date you want to convert.