1 files changed, 18 insertions, 0 deletions
diff --git a/src/mscorlib/shared/System/Globalization/CalendarAlgorithmType.cs b/src/mscorlib/shared/System/Globalization/CalendarAlgorithmType.cs
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+++ b/src/mscorlib/shared/System/Globalization/CalendarAlgorithmType.cs
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+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+namespace System.Globalization
+{
+    public enum CalendarAlgorithmType
+    {
+        Unknown = 0,            // This is the default value to return in the Calendar base class.
+        SolarCalendar = 1,      // Solar-base calendar, such as GregorianCalendar, jaoaneseCalendar, JulianCalendar, etc.
+                                // Solar calendars are based on the solar year and seasons.
+        LunarCalendar = 2,      // Lunar-based calendar, such as Hijri and UmAlQuraCalendar.
+                                // Lunar calendars are based on the path of the moon.  The seasons are not accurately represented.
+        LunisolarCalendar = 3   // Lunisolar-based calendar which use leap month rule, such as HebrewCalendar and Asian Lunisolar calendars.
+                                // Lunisolar calendars are based on the cycle of the moon, but consider the seasons as a secondary consideration,
+                                // so they align with the seasons as well as lunar events.
+    }
+}