diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 335db40..775cae2 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -104,6 +104,9 @@ Special events require a more detailed structure.
 2. Empty Fields: If there are no fortunes to add, leave the corresponding fields
    as empty strings (`""`).
 
+3. We support adding multiple special events on the same day,
+   and the hash function will determine which event will be shown for that day.
+
 ### Adding New Themes
 
 #### JSON Theme Structure
diff --git a/fortune_generator/js/fortune.js b/fortune_generator/js/fortune.js
index 4b1249a..8a2601a 100644
--- a/fortune_generator/js/fortune.js
+++ b/fortune_generator/js/fortune.js
@@ -268,6 +268,7 @@ const J_ip_to_fortune = $("#ip-to-fortune");
 
 let special = false;
 let special_events_index = 0;
+let current_day_special_events = [];
 
 // init page
 async function init_page() {
@@ -315,9 +316,14 @@ async function init_page() {
       eventIndexList[j] = i;
     } else if (diffCount === 0) {
       special = true;
-      special_events_index = i;
+      current_day_special_events.push(i);
     }
   }
+
+  special_events_index = ip.split(".").map(num => parseInt(num)).reduce((acc, cur) => acc + cur);
+  special_events_index %= current_day_special_events.length;
+  special_events_index = current_day_special_events[special_events_index];
+
   // if there is upcoming event then show
   for (let eventIndex = 0; eventIndex < showSpecialEventCount; eventIndex++) {
     if (eventIndexList[eventIndex] != -1) {
diff --git a/scripts/check-events.py b/scripts/check-events.py
index 707712e..9ea20d2 100644
--- a/scripts/check-events.py
+++ b/scripts/check-events.py
@@ -277,6 +277,12 @@ def check_static_date(event: dict, idx: int):
             idx, trigger_date["date"], 1, DAYSPERMONTH[month], "triggerDate.date"
         )
 
+    key = f'{event_name}:{trigger_date["month"]}/{trigger_date["date"]}'
+    if key in event_dates:
+        errors[idx].append(f"The `{key}` is repeated.")
+
+    event_dates.add(key)
+
 
 def check_cyclical_date(event: dict, idx: int):
     trigger_date: dict = event["triggerDate"]
@@ -309,6 +315,12 @@ def check_cyclical_date(event: dict, idx: int):
     validate_number(idx, trigger_date["week"], 1, 5, "triggerDate.week")
     validate_number(idx, trigger_date["weekday"], 1, 7, "triggerDate.weekday")
 
+    key = f'{event_name}:{trigger_date["month"]}/{trigger_date["week"]}/{trigger_date["weekday"]}'
+    if key in event_dates:
+        errors[idx].append(f"The `{key}` is repeated.")
+
+    event_dates.add(key)
+
 
 def check_custom_date(event: dict, idx: int):
     trigger_date: dict = event["triggerDate"]
@@ -357,11 +369,11 @@ def check_custom_date(event: dict, idx: int):
     if date is None:
         return
 
-    date_str = f"{year}/{month}/{date}"
-    if date_str in event_dates:
-        errors[idx].append(f"The date `{date_str}` of `{event_name}` is repeated.")
+    key = f'{event_name}:{year}/{month}/{date}'
+    if key in event_dates:
+        errors[idx].append(f"The `{key}` is repeated.")
 
-    event_dates.add(date_str)
+    event_dates.add(key)
 
 
 date_checker = {