diff --git a/src/components/greeter.tsx b/src/components/greeter.tsx
index db30679..feaa250 100644
--- a/src/components/greeter.tsx
+++ b/src/components/greeter.tsx
@@ -70,11 +70,11 @@ export const getGreeting = (greetings: Array<IGreetingProps>): string => {
 export const getExtension = (day: number) => {
   let extension = "th";
 
-  if (day % 10 === 1) {
+  if (day % 10 === 1 && day !== 11) {
     extension = "st";
-  } else if (day % 10 === 2) {
+  } else if (day % 10 === 2 && day !== 12) {
     extension = "nd";
-  } else if (day % 10 === 3) {
+  } else if (day % 10 === 3 && day !== 13) {
     extension = "rd";
   }
 
@@ -93,9 +93,9 @@ export const getDateString = (
 ) => {
   let currentDate = new Date();
 
-  let weekday = weekdays[currentDate.getUTCDay()];
+  let weekday = weekdays[currentDate.getDay()];
   let day = currentDate.getDate();
-  let month = months[currentDate.getUTCMonth()];
+  let month = months[currentDate.getMonth()];
   let extension = getExtension(day);
   let year = currentDate.getFullYear();
 
diff --git a/src/test/components/greeter.spec.tsx b/src/test/components/greeter.spec.tsx
index 6cb6a0d..f9d04ab 100644
--- a/src/test/components/greeter.spec.tsx
+++ b/src/test/components/greeter.spec.tsx
@@ -68,7 +68,34 @@ it("getExtension test", () => {
   expect(getExtension(1)).toEqual("st");
   expect(getExtension(2)).toEqual("nd");
   expect(getExtension(3)).toEqual("rd");
+  expect(getExtension(4)).toEqual("th");
+  expect(getExtension(5)).toEqual("th");
+  expect(getExtension(6)).toEqual("th");
+  expect(getExtension(7)).toEqual("th");
+  expect(getExtension(8)).toEqual("th");
+  expect(getExtension(9)).toEqual("th");
+  expect(getExtension(10)).toEqual("th");
+  expect(getExtension(11)).toEqual("th");
+  expect(getExtension(12)).toEqual("th");
+  expect(getExtension(13)).toEqual("th");
+  expect(getExtension(14)).toEqual("th");
   expect(getExtension(15)).toEqual("th");
+  expect(getExtension(16)).toEqual("th");
+  expect(getExtension(17)).toEqual("th");
+  expect(getExtension(18)).toEqual("th");
+  expect(getExtension(19)).toEqual("th");
+  expect(getExtension(20)).toEqual("th");
+  expect(getExtension(21)).toEqual("st");
+  expect(getExtension(22)).toEqual("nd");
+  expect(getExtension(23)).toEqual("rd");
+  expect(getExtension(24)).toEqual("th");
+  expect(getExtension(25)).toEqual("th");
+  expect(getExtension(26)).toEqual("th");
+  expect(getExtension(27)).toEqual("th");
+  expect(getExtension(28)).toEqual("th");
+  expect(getExtension(29)).toEqual("th");
+  expect(getExtension(30)).toEqual("th");
+  expect(getExtension(31)).toEqual("st");
 });
 
 it("Greeter snapshot test", () => {