diff --git a/src/format.ts b/src/format.ts
index 9e9365a..8ac69b2 100644
--- a/src/format.ts
+++ b/src/format.ts
@@ -197,14 +197,14 @@ const amPmUpperCase: Formatter = (nepaliDate, locale) => {
          */
         return 'A'
     }
-    return nepaliDate.getHours() > 12 ? 'PM' : 'AM'
+    return nepaliDate.getHours() >= 12 ? 'PM' : 'AM'
 }
 
 const amPmLowerCase: Formatter = (nepaliDate, locale) => {
     if (locale === LOCALE_NE) {
         return 'a'
     }
-    return nepaliDate.getHours() > 12 ? 'pm' : 'am'
+    return nepaliDate.getHours() >= 12 ? 'pm' : 'am'
 }
 
 /* Formatters mapping and implementations */
diff --git a/tests/format.test.ts b/tests/format.test.ts
index b1deae5..ad8b41b 100644
--- a/tests/format.test.ts
+++ b/tests/format.test.ts
@@ -221,6 +221,20 @@ describe('format', () => {
         const formattedDate = format(nepaliDate3, formatStr)
         expect(formattedDate).toEqual('pm')
     })
+
+    it('should format NepaliDate (AM) for midnight', () => {
+        const nepaliDate = new NepaliDate(2079, 5, 3)
+        const formatStr = 'A'
+        const formattedDate = format(nepaliDate, formatStr)
+        expect(formattedDate).toEqual('AM')
+    })
+
+    it('should format NepaliDate (PM) for noon', () => {
+        const nepaliDate = new NepaliDate(2079, 5, 3, 12)
+        const formatStr = 'A'
+        const formattedDate = format(nepaliDate, formatStr)
+        expect(formattedDate).toEqual('PM')
+    })
 })
 
 describe('formatNepali', () => {