diff --git a/app/(settings)/notifications.tsx b/app/(settings)/notifications.tsx
index 3c04fb9..41888a7 100644
--- a/app/(settings)/notifications.tsx
+++ b/app/(settings)/notifications.tsx
@@ -80,6 +80,8 @@ export default function CategoryScreen() {
                 onChange,
                 mode: 'time',
                 is24Hour: true,
+                positiveButton: { label: 'Kies' },
+                negativeButton: { label: 'Sluiten' },
             } );
         }
     }
@@ -92,6 +94,22 @@ export default function CategoryScreen() {
             const minutes = selectedDate.getMinutes().toString().padStart( 2, '0' );
             const timeString = `${hours}:${minutes}`;
 
+            if (currentEdit === 'dayBefore') {
+                const minDate = new Date( `1970-01-01T16:00` );
+                if (minDate > selectedDate) {
+                    Message.error( 'Meldingen voor 16:00 worden niet ondersteund' );
+
+                    return;
+                }
+            } else {
+                const minDate = new Date( `1970-01-01T09:00` );
+                if (minDate < selectedDate) {
+                    Message.error( 'Meldingen na 09:00 worden niet ondersteund' );
+
+                    return;
+                }
+            }
+
             if (currentEdit === 'dayBefore') {
                 setDayBefore( timeString );
             } else {