diff --git a/components/CreateEventDialog.vue b/components/CreateEventDialog.vue
index b346a7d..8906d4e 100644
--- a/components/CreateEventDialog.vue
+++ b/components/CreateEventDialog.vue
@@ -480,6 +480,15 @@ watch(recurrenceFrequency, (newValue) => {
   }
 });
 
+// Auto-fill end date when start date is selected (most events are same day)
+watch(startDate, (newStartDate) => {
+  if (newStartDate && !endDate.value) {
+    // Auto-fill end date to same as start date for same-day events
+    endDate.value = newStartDate;
+    console.log('[CreateEventDialog] Auto-filled end date to match start date:', newStartDate);
+  }
+});
+
 // Watch for separate date and time changes to combine them
 watch([startDate, startTime], ([newDate, newTime]) => {
   if (newDate && newTime) {
@@ -580,6 +589,12 @@ const resetForm = () => {
   startDateModel.value = null;
   endDateModel.value = null;
   
+  // Reset separate date/time fields
+  startDate.value = '';
+  startTime.value = '';
+  endDate.value = '';
+  endTime.value = '';
+  
   // Reset UI state
   isPaidEvent.value = false;
   memberPricingEnabled.value = true;
@@ -626,6 +641,30 @@ const handleSubmit = async () => {
     const startDateTime = new Date(`${startDate.value}T${startTime.value}`);
     const endDateTime = new Date(`${endDate.value}T${endTime.value}`);
     
+    console.log('[CreateEventDialog] DateTime validation:', {
+      startDate: startDate.value,
+      startTime: startTime.value,
+      endDate: endDate.value,
+      endTime: endTime.value,
+      startDateTime: startDateTime.toISOString(),
+      endDateTime: endDateTime.toISOString(),
+      startTimestamp: startDateTime.getTime(),
+      endTimestamp: endDateTime.getTime()
+    });
+    
+    // Validate dates are valid
+    if (isNaN(startDateTime.getTime())) {
+      errorMessage.value = 'Invalid start date or time';
+      loading.value = false;
+      return;
+    }
+    
+    if (isNaN(endDateTime.getTime())) {
+      errorMessage.value = 'Invalid end date or time';
+      loading.value = false;
+      return;
+    }
+    
     // Validate start is not in the past
     if (startDateTime < new Date()) {
       errorMessage.value = 'Event start time cannot be in the past';
@@ -633,8 +672,8 @@ const handleSubmit = async () => {
       return;
     }
     
-    // Validate end is after start
-    if (endDateTime <= startDateTime) {
+    // Validate end is after start (using getTime() for precise comparison)
+    if (endDateTime.getTime() <= startDateTime.getTime()) {
       errorMessage.value = 'Event end time must be after start time';
       loading.value = false;
       return;