diff --git a/frontend-internal/src/routes/audit/+page.svelte b/frontend-internal/src/routes/audit/+page.svelte
index b4cf141..d790a7f 100644
--- a/frontend-internal/src/routes/audit/+page.svelte
+++ b/frontend-internal/src/routes/audit/+page.svelte
@@ -43,51 +43,49 @@
    * Obtener fechas según el período seleccionado
    */
   function getDateRangeForPeriod(): { from: string; to: string } {
-    const today = new Date();
-    today.setHours(0, 0, 0, 0);
+    // Trabajar en UTC para evitar problemas de zona horaria
+    const now = new Date();
     
     let from: Date;
-    let to: Date = new Date();
+    let to: Date;
     
     switch (periodFilter) {
       case 'today':
-        from = new Date(today);
-        to = new Date();
-        to.setHours(23, 59, 59, 999);
+        // Hoy desde las 00:00:00 hasta ahora en UTC
+        from = new Date(Date.UTC(now.getUTCFullYear(), now.getUTCMonth(), now.getUTCDate(), 0, 0, 0));
+        to = new Date(); // Ahora en UTC
         break;
       case 'yesterday':
-        from = new Date(today);
-        from.setDate(from.getDate() - 1);
-        to = new Date(today);
-        to.setSeconds(to.getSeconds() - 1);
+        // Ayer completo en UTC
+        from = new Date(Date.UTC(now.getUTCFullYear(), now.getUTCMonth(), now.getUTCDate() - 1, 0, 0, 0));
+        to = new Date(Date.UTC(now.getUTCFullYear(), now.getUTCMonth(), now.getUTCDate(), 0, 0, 0));
         break;
       case 'last7days':
-        from = new Date(today);
-        from.setDate(from.getDate() - 7);
+        // Últimos 7 días en UTC
+        from = new Date(Date.UTC(now.getUTCFullYear(), now.getUTCMonth(), now.getUTCDate() - 7, 0, 0, 0));
         to = new Date();
-        to.setHours(23, 59, 59, 999);
         break;
       case 'last30days':
-        from = new Date(today);
-        from.setDate(from.getDate() - 30);
+        // Últimos 30 días en UTC
+        from = new Date(Date.UTC(now.getUTCFullYear(), now.getUTCMonth(), now.getUTCDate() - 30, 0, 0, 0));
         to = new Date();
-        to.setHours(23, 59, 59, 999);
         break;
       case 'custom':
-        // Para fechas custom, parsear las fechas string y agregar hora
+        // Para fechas custom, parsear como UTC
         if (!customDateFrom || !customDateTo) {
           return { from: '', to: '' };
         }
-        const fromDate = new Date(customDateFrom);
-        fromDate.setHours(0, 0, 0, 0);
-        const toDate = new Date(customDateTo);
-        toDate.setHours(23, 59, 59, 999);
+        const fromParts = customDateFrom.split('-').map(Number);
+        const toParts = customDateTo.split('-').map(Number);
+        from = new Date(Date.UTC(fromParts[0], fromParts[1] - 1, fromParts[2], 0, 0, 0));
+        to = new Date(Date.UTC(toParts[0], toParts[1] - 1, toParts[2], 23, 59, 59));
         return {
-          from: fromDate.toISOString(),
-          to: toDate.toISOString()
+          from: from.toISOString(),
+          to: to.toISOString()
         };
       default:
-        from = new Date(today);
+        from = new Date(Date.UTC(now.getUTCFullYear(), now.getUTCMonth(), now.getUTCDate(), 0, 0, 0));
+        to = new Date();
     }
     
     return {