System.TimeZoneInfo.ValidateRules C# (CSharp) Method

		static List<AdjustmentRule> ValidateRules (List<AdjustmentRule> adjustmentRules)
		{
			AdjustmentRule prev = null;
			foreach (AdjustmentRule current in adjustmentRules.ToArray ()) {
				if (prev != null && prev.DateEnd > current.DateStart) {
					adjustmentRules.Remove (current);
				}
				prev = current;
			}
			return adjustmentRules;
		}