C# / .NET - subtract year from DateTime

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In C# / .NET it is possible to subtract year from DateTime object in following way.

DateTime.AddYears method example

DateTime time1 = new DateTime(2012, 1, 1, 12, 0, 0, 0);
DateTime time2 = time1.AddYears(-1);

Console.WriteLine($"Old time: {time1:s}");
Console.WriteLine($"New time: {time2:s}");


Old time: 2012-01-01T12:00:00
New time: 2011-01-01T12:00:00


  1. DateTime.AddYears Method - Microsoft docs

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