Holiday System (#3122)

Content.Server/Holiday/ShouldCelebrate/DayOfYear.cs

@@ -0,0 +1,26 @@
+using System;
+using Content.Server.Holiday.Interfaces;
+using JetBrains.Annotations;
+using Robust.Shared.Serialization;
+
+namespace Content.Server.Holiday.ShouldCelebrate
+{
+    /// <summary>
+    ///     For a holiday that occurs on a certain day of the year.
+    /// </summary>
+    [UsedImplicitly]
+    public class DayOfYear : IHolidayShouldCelebrate
+    {
+        private uint _dayOfYear;
+
+        void IExposeData.ExposeData(ObjectSerializer serializer)
+        {
+            serializer.DataField(ref _dayOfYear, "dayOfYear", 1u);
+        }
+
+        public bool ShouldCelebrate(DateTime date, HolidayPrototype holiday)
+        {
+            return date.DayOfYear == _dayOfYear;
+        }
+    }
+}