diff --git a/src/Infrastructure/Trend/TrendService.cs b/src/Infrastructure/Trend/TrendService.cs
index 06758ef..41cbcbc 100644
--- a/src/Infrastructure/Trend/TrendService.cs
+++ b/src/Infrastructure/Trend/TrendService.cs
@@ -212,14 +212,14 @@ public class TrendService : ITrendService
             FROM event_history_table
             WHERE event_time >= @from AND event_time <= @to
               AND event_type IN ('RUN', 'TRIP')
-              AND (@area IS NULL OR area ILIKE '%'||@area||'%' OR sub_area ILIKE '%'||@area||'%')
+              AND (@area::text IS NULL OR area ILIKE '%'||@area::text||'%' OR sub_area ILIKE '%'||@area::text||'%')
             ORDER BY tagname, event_time
             """;
         await using var conn = NewConn();
         await conn.OpenAsync(ct);
         await using var cmd = new NpgsqlCommand(sql, conn);
-        cmd.Parameters.AddWithValue("from", from);
-        cmd.Parameters.AddWithValue("to", to);
+        cmd.Parameters.AddWithValue("from", from.ToUniversalTime());   // 타임존 시프트 방지
+        cmd.Parameters.AddWithValue("to", to.ToUniversalTime());
         cmd.Parameters.AddWithValue("area", (object?)area ?? DBNull.Value);
 
         var bands = new List<TrendBandDto>();