diff --git a/api/src/__tests__/slots.test.ts b/api/src/__tests__/slots.test.ts
index d7b7851..0730a31 100644
--- a/api/src/__tests__/slots.test.ts
+++ b/api/src/__tests__/slots.test.ts
@@ -203,6 +203,45 @@ describe("generateTimeSlots", () => {
       expect(slots).to.have.length(0);
     });
 
+    it("should handle exception with date with minutes and seconds", () => {
+      const dayExceptionWithTime: Exception = {
+        date: "2024-01-16T10:30:45.123Z", // Date with time components
+        type: "day",
+      };
+
+      const slots = generateTimeSlots(
+        testDate, // currentTime
+        testDate, // date
+        basicAvailability,
+        basicEventTypeConfig,
+        [dayExceptionWithTime],
+        existingEvents
+      );
+
+      expect(slots).to.have.length(0);
+    });
+
+    it("should handle hours exception with date containing time components", () => {
+      const hoursExceptionWithTime: Exception = {
+        date: "2024-01-16T10:30:45.123Z", // Date with time components
+        type: "hours",
+        hours: [{ start: "10:00", end: "12:00" }],
+      };
+
+      const slots = generateTimeSlots(
+        testDate, // currentTime
+        testDate, // date
+        basicAvailability,
+        basicEventTypeConfig,
+        [hoursExceptionWithTime],
+        existingEvents
+      );
+
+      expect(slots).to.have.length(4); // 2 hours * 2 slots per hour
+      expect(slots[0].time).to.equal("10:00");
+      expect(slots[3].time).to.equal("11:30");
+    });
+
     it("should use exception hours instead of regular availability", () => {
       const hoursException: Exception = {
         date: "2024-01-16",
diff --git a/api/src/slots.ts b/api/src/slots.ts
index 92e061a..e769789 100644
--- a/api/src/slots.ts
+++ b/api/src/slots.ts
@@ -193,7 +193,12 @@ export function generateTimeSlots(
   const slots: TimeSlot[] = [];
 
   // Check if this date has an exception
-  const exception = exceptions.find((e) => e.date === dateStr);
+  const exception = exceptions.find((e) => {
+    const exceptionDate = new Date(e.date);
+    const exceptionDateCET = convertToCET(exceptionDate);
+    const exceptionDateStr = getDateString(exceptionDateCET);
+    return exceptionDateStr === dateStr;
+  });
 
   // If there's a "day" exception, no slots available
   if (exception?.type === "day") {