ParHow to count the days between two dates
gΔDYSEEX counts the days between two dates two ways at once: actual calendar days, and the 30/360 days used for many bonds and loans.
Problem
How many days are there from March 14, 2026 to December 25, 2026?
Keystrokes
- 3.142026ENTER
The first date, in month.dayyear form.
- 12.252026gΔDYSEEX
The second date, then the actual days between them.
- x≷y
The days on a 30/360 basis.
Answer
There are 286.00 actual days, or 281.00 days on a 30/360 basis.
Entering dates
Dates go in as the month, a decimal point, then the day in two digits and the year in four: 3.142026 is March 14, 2026. If you prefer day-month-year, press gD.MY4 once; it stays set until you press gM.DY5.
The calculator handles dates from 1582 to 4046, leap years included.
Questions
What if the second date is earlier?
The answer is negative.