Pricing fixed-income securities involves estimating year fractions between dates. However, the fraction of a year between two dates depends on factors such as leap years and there are various conventions for dealing with this.
In this package, we collect various day count conventions and provide a method
yearfrac for computing the year fraction between dates.
julia> using DayCounts, Dates julia> basis = [Thirty360, Actual360, Actual365, ActualActual]; julia> println("\nYear fraction between Jan 1 and April 1:\n") for y in 2019:2020 println(y,isleapyear(y) ? " (Leap Year)" : " (No Leap Year)") for b in basis yf = yearfrac(Date(y,1,1),Date(y,4,1),b) println(b,": ",yf) end println("") end Year fraction between Jan 1 and April 1: 2019 (No Leap Year) Thirty360: 0.25 Actual360: 0.25 Actual365: 0.2465753424657534 ActualActual: 0.2465753424657534 2020 (Leap Year) Thirty360: 0.25 Actual360: 0.25277777777777777 Actual365: 0.2493150684931507 ActualActual: 0.24863387978142076
We used the following sources:
4 months ago