https://github.com/markwhitaker/monthdiff

Simple C# extension methods to calculate the difference in months between two dates
https://github.com/markwhitaker/monthdiff

c-sharp datetime datetimeoffset extension-methods months

Last synced: 2 days ago
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Simple C# extension methods to calculate the difference in months between two dates

• Host: GitHub
• URL: https://github.com/markwhitaker/monthdiff
• Owner: markwhitaker
• License: mit
• Created: 2017-04-15T15:54:33.000Z (almost 8 years ago)
• Default Branch: main
• Last Pushed: 2025-01-13T08:24:54.000Z (5 days ago)
• Last Synced: 2025-01-13T09:32:19.051Z (5 days ago)
• Topics: c-sharp, datetime, datetimeoffset, extension-methods, months
• Language: C#
• Homepage:
• Size: 38.1 KB
• Stars: 0
• Watchers: 3
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# MonthDiff

A very simple pair of extension methods on `DateTime` and `DateTimeOffset` to calculate the difference in months between two dates.

I wanted it to work exactly like a `TotalMonths` property on `TimeSpan` would work, i.e. return the count of complete months between two dates, ignoring any partial months. Because it's based on `DateTime.AddMonths()` it respects different month lengths and returns what a human would understand as a period of months. Unfortunately it can't be implemented as an extension method on `TimeSpan` because that doesn't retain knowledge of the actual dates used, and for months they're important.

Originally posted at [StackOverflow](http://stackoverflow.com/questions/1525990/calculating-the-difference-in-months-between-two-dates/25136172#25136172).