I THINK I FIXED IT

src/common/model/player/impl/scoresaber-player.ts

@@ -108,7 +108,7 @@ export async function getScoreSaberPlayerFromToken(
       const date = getMidnightAlignedDate(getDaysAgoDate(daysAgo));
       daysAgo += 1; // Increment daysAgo for each earlier rank
 
-      statisticHistory[date.toString()] = {
+      statisticHistory[formatDateMinimal(date)] = {
         rank: rank,
       };
     }

src/common/schema/player-schema.ts

@@ -115,7 +115,7 @@ PlayerSchema.methods.sortStatisticHistory = function (): Map<
           Date.parse(b[0]) - Date.parse(a[0]),
       )
       // Convert the date strings back to Date objects for the resulting Map
-      .map(([date, history]) => [new Date(date).toUTCString(), history]),
+      .map(([date, history]) => [formatDateMinimal(new Date(date)), history]),
   );
   return this.statisticHistory;
 };