diff --git a/Content.Client/Changelog/ChangelogManager.cs b/Content.Client/Changelog/ChangelogManager.cs
index 396af99d2c..d62ce17f0e 100644
--- a/Content.Client/Changelog/ChangelogManager.cs
+++ b/Content.Client/Changelog/ChangelogManager.cs
@@ -1,5 +1,6 @@
 using System.Globalization;
 using System.Linq;
+using System.Text.RegularExpressions;
 using System.Threading.Tasks;
 using Content.Shared.CCVar;
 using Robust.Shared.Configuration;
@@ -25,8 +26,8 @@ namespace Content.Client.Changelog
         private ISawmill _sawmill = default!;
 
         public bool NewChangelogEntries { get; private set; }
-        public int LastReadId { get; private set; }
-        public int MaxId { get; private set; }
+        public DateTime LastReadTime { get; private set; }
+        public DateTime MaxTime { get; private set; }
 
         public event Action? NewChangelogEntriesChanged;
 
@@ -35,7 +36,7 @@ namespace Content.Client.Changelog
         ///     stores the new ID to disk and clears <see cref="NewChangelogEntries"/>.
         /// </summary>
         /// <remarks>
-        ///     <see cref="LastReadId"/> is NOT cleared
+        ///     <see cref="MaxTime"/> is NOT cleared
         ///     since that's used in the changelog menu to show the "since you last read" bar.
         /// </remarks>
         public void SaveNewReadId()
@@ -43,9 +44,11 @@ namespace Content.Client.Changelog
             NewChangelogEntries = false;
             NewChangelogEntriesChanged?.Invoke();
 
-            using var sw = _resource.UserData.OpenWriteText(new ($"/changelog_last_seen_{_configManager.GetCVar(CCVars.ServerId)}"));
+            using var sw =
+                _resource.UserData.OpenWriteText(
+                    new($"/changelog_last_seen_{_configManager.GetCVar(CCVars.ServerId)}_datetime"));
 
-            sw.Write(MaxId.ToString());
+            sw.Write(MaxTime.ToString("O"));
         }
 
         public async void Initialize()
@@ -80,15 +83,19 @@ namespace Content.Client.Changelog
                 return;
             }
 
-            MaxId = changelog.Entries.Max(c => c.Id);
+            MaxTime = changelog.Entries.Max(c => c.Time);
 
-            var path = new ResPath($"/changelog_last_seen_{_configManager.GetCVar(CCVars.ServerId)}");
-            if (_resource.UserData.TryReadAllText(path, out var lastReadIdText))
+            var path = new ResPath($"/changelog_last_seen_{_configManager.GetCVar(CCVars.ServerId)}_datetime");
+            if(_resource.UserData.TryReadAllText(path, out var lastReadTimeText))
             {
-                LastReadId = int.Parse(lastReadIdText);
+                if (Regex.IsMatch(lastReadTimeText,
+                        @"^([\+-]?\d{4}(?!\d{2}\b))((-?)((0[1-9]|1[0-2])(\3([12]\d|0[1-9]|3[01]))?|W([0-4]\d|5[0-2])(-?[1-7])?|(00[1-9]|0[1-9]\d|[12]\d{2}|3([0-5]\d|6[1-6])))([T\s]((([01]\d|2[0-3])((:?)[0-5]\d)?|24\:?00)([\.,]\d+(?!:))?)?(\17[0-5]\d([\.,]\d+)?)?([zZ]|([\+-])([01]\d|2[0-3]):?([0-5]\d)?)?)?)?$"))
+                {
+                    LastReadTime = DateTime.ParseExact(lastReadTimeText, "O", CultureInfo.InvariantCulture);
+                }
             }
 
-            NewChangelogEntries = LastReadId < MaxId;
+            NewChangelogEntries = LastReadTime < MaxTime;
 
             NewChangelogEntriesChanged?.Invoke();
         }
diff --git a/Content.Client/Changelog/ChangelogTab.xaml.cs b/Content.Client/Changelog/ChangelogTab.xaml.cs
index d1e2bc7533..bb677db40e 100644
--- a/Content.Client/Changelog/ChangelogTab.xaml.cs
+++ b/Content.Client/Changelog/ChangelogTab.xaml.cs
@@ -34,14 +34,14 @@ public sealed partial class ChangelogTab : Control
             .OrderByDescending(c => c.Key);
 
         var hasRead = changelog.Name != MainChangelogName ||
-                      _changelog.MaxId <= _changelog.LastReadId;
+                      _changelog.MaxTime <= _changelog.LastReadTime;
 
         foreach (var dayEntries in byDay)
         {
             var day = dayEntries.Key;
 
             var groupedEntries = dayEntries
-                .GroupBy(c => (c.Author, Read: c.Id <= _changelog.LastReadId))
+                .GroupBy(c => (c.Author, Read: c.Time <= _changelog.LastReadTime))
                 .OrderBy(c => c.Key.Read)
                 .ThenBy(c => c.Key.Author);