diff --git a/CHANGELOG.md b/CHANGELOG.md
index e92d8e0..8bdeedc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,9 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+### Added
+ - Added shim methods for finding closest DateTimes from a sequence
+
 ## [10.1.0] - 2019-11-18
 ### Added
  - Added PathUtils methods for getting ProgramData paths
diff --git a/ICD.Common.Utils/Extensions/DateTimeExtensions.cs b/ICD.Common.Utils/Extensions/DateTimeExtensions.cs
index 6fde0be..34b5eb7 100644
--- a/ICD.Common.Utils/Extensions/DateTimeExtensions.cs
+++ b/ICD.Common.Utils/Extensions/DateTimeExtensions.cs
@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 using System.Globalization;
 using System.Linq;
 using ICD.Common.Properties;
@@ -38,14 +39,29 @@ namespace ICD.Common.Utils.Extensions
 		/// <param name="inclusive">Whether or not to include times equal to the target time</param>
 		/// <param name="times"></param>
 		/// <returns></returns>
-		public static DateTime? NextEarliestTime(this DateTime target, bool inclusive, params DateTime[] times)
+		public static DateTime? NextEarliestTime(this DateTime target, bool inclusive, [NotNull] params DateTime[] times)
+		{
+			if (times == null)
+				throw new ArgumentNullException("times");
+
+			return target.NextEarliestTime(inclusive, (IEnumerable<DateTime>)times);
+		}
+
+		/// <summary>
+		/// Returns the closest DateTime to the target time that is greater than the target time
+		/// </summary>
+		/// <param name="target"></param>
+		/// <param name="inclusive">Whether or not to include times equal to the target time</param>
+		/// <param name="times"></param>
+		/// <returns></returns>
+		public static DateTime? NextEarliestTime(this DateTime target, bool inclusive, [NotNull] IEnumerable<DateTime> times)
 		{
 			if (times == null)
 				throw new ArgumentNullException("times");
 
 			DateTime earliestTime;
 			bool success = times.OrderBy(dt => dt).TryFirst(dt => inclusive ? target <= dt : target < dt, out earliestTime);
-			return success ? earliestTime : (DateTime?) null;
+			return success ? earliestTime : (DateTime?)null;
 		}
 
 		/// <summary>
@@ -55,14 +71,29 @@ namespace ICD.Common.Utils.Extensions
 		/// <param name="inclusive">Whether or not to include times equal to the target time</param>
 		/// <param name="times"></param>
 		/// <returns></returns>
-		public static DateTime? PreviousLatestTime(this DateTime target, bool inclusive, params DateTime[] times)
+		public static DateTime? PreviousLatestTime(this DateTime target, bool inclusive, [NotNull] params DateTime[] times)
+		{
+			if (times == null)
+				throw new ArgumentNullException("times");
+
+			return target.PreviousLatestTime(inclusive, (IEnumerable<DateTime>)times);
+		}
+
+		/// <summary>
+		/// Returns the closest DateTime to the target time that is less than the target time
+		/// </summary>
+		/// <param name="target"></param>
+		/// <param name="inclusive">Whether or not to include times equal to the target time</param>
+		/// <param name="times"></param>
+		/// <returns></returns>
+		public static DateTime? PreviousLatestTime(this DateTime target, bool inclusive, [NotNull] IEnumerable<DateTime> times)
 		{
 			if (times == null)
 				throw new ArgumentNullException("times");
 
 			DateTime latestTime;
 			bool success = times.OrderByDescending(dt => dt).TryFirst(dt => inclusive ? target >= dt : target > dt, out latestTime);
-			return success ? latestTime : (DateTime?) null;
+			return success ? latestTime : (DateTime?)null;
 		}
 
 		/// <summary>
@@ -85,6 +116,11 @@ namespace ICD.Common.Utils.Extensions
 			return extends.StartOfDay() + new TimeSpan(24, 0, 0);
 		}
 
+		/// <summary>
+		/// Returns the given date in unix timestamp format.
+		/// </summary>
+		/// <param name="extends"></param>
+		/// <returns></returns>
 		[PublicAPI]
 		public static double ToUnixTimestamp(this DateTime extends)
 		{