How to Calculate Leap Years in Microsoft Access

In this Microsoft Access tutorial, I will show you how to determine whether or not a year is a leap year using the IsDate function and a few other tricks.

Pre-Requisites

• Calculated Fields: https://599cd.com/Calculated
• Year Month Day: https://599cd.com/YMD
• Concatenation: https://599cd.com/Concat
• ISO Date Format: https://599cd.com/ISO

Links

• Prorated: https://599cd.com/Prorated
• Is Leap Year: https://599cd.com/IsLeapYear (Gold Members)

Recommended Courses

• Access Expert 27: https://599cd.com/ACX27
• Access Expert 28: https://599cd.com/ACX28
• DateTime Seminar: https://599cd.com/DateTime

Methods

• Number of days in a banker's month (30)
• Number of days in the average month (30.4167)
• Number of days in the year (365 or 366)
• Number of days in the current month

Usage

• D: CustomerSince
• Y: Year(D)
• D2: [Y] & "-02-29"
• D2: "2/29/" & Y    
• IsLeapYear: IsDate([D2])
• IsLeapYear: IsDate(Year([D]) & "-02-29")
• IsLeapYear: IsDate("2/29/" & Year([D]))

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Keywords

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