diff --git a/src/stores/mixin.ts b/src/stores/mixin.ts
index d6ee99b61..f3e429f4f 100644
--- a/src/stores/mixin.ts
+++ b/src/stores/mixin.ts
@@ -244,13 +244,17 @@ export const useCounterMixin = defineStore("mixin", () => {
   }
 
   function dateToISO(date: Date) {
-    return (
-      date.getFullYear() +
-      "-" +
-      appendLeadingZeroes(date.getMonth() + 1) +
-      "-" +
-      appendLeadingZeroes(date.getDate())
-    );
+    const isValidDate = Boolean(+date);
+    if (!isValidDate) return null;
+    if (isValidDate && date.getFullYear() < 1000) {
+      return (
+        date.getFullYear() +
+        "-" +
+        appendLeadingZeroes(date.getMonth() + 1) +
+        "-" +
+        appendLeadingZeroes(date.getDate())
+      );
+    }
   }
 
   function appendLeadingZeroes(n: number) {