diff --git a/src/components/DayPickerRangeController.jsx b/src/components/DayPickerRangeController.jsx
index 2383ab0277..83aaa21b9a 100644
--- a/src/components/DayPickerRangeController.jsx
+++ b/src/components/DayPickerRangeController.jsx
@@ -40,6 +40,7 @@ import {
 
 import DayPicker from './DayPicker';
 import getPreviousMonthMemoLast from '../utils/getPreviousMonthMemoLast';
+import getPooledMoment from '../utils/getPooledMoment';
 
 const propTypes = forbidExtraProps({
   startDate: momentPropTypes.momentObj,
@@ -394,7 +395,7 @@ export default class DayPickerRangeController extends React.PureComponent {
     if (didFocusChange || recomputePropModifiers) {
       values(visibleDays).forEach((days) => {
         Object.keys(days).forEach((day) => {
-          const momentObj = moment(day);
+          const momentObj = getPooledMoment(day);
           let isBlocked = false;
 
           if (didFocusChange || recomputeOutsideRange) {
diff --git a/src/components/DayPickerSingleDateController.jsx b/src/components/DayPickerSingleDateController.jsx
index c6b9642706..24649038fd 100644
--- a/src/components/DayPickerSingleDateController.jsx
+++ b/src/components/DayPickerSingleDateController.jsx
@@ -31,6 +31,7 @@ import {
 
 import DayPicker from './DayPicker';
 import getPreviousMonthMemoLast from '../utils/getPreviousMonthMemoLast';
+import getPooledMoment from '../utils/getPooledMoment';
 
 const propTypes = forbidExtraProps({
   date: momentPropTypes.momentObj,
@@ -268,7 +269,7 @@ export default class DayPickerSingleDateController extends React.PureComponent {
     if (didFocusChange || recomputePropModifiers) {
       values(visibleDays).forEach((days) => {
         Object.keys(days).forEach((day) => {
-          const momentObj = moment(day);
+          const momentObj = getPooledMoment(day);
           if (this.isBlocked(momentObj)) {
             modifiers = this.addModifier(modifiers, momentObj, 'blocked');
           } else {
diff --git a/src/utils/getPooledMoment.js b/src/utils/getPooledMoment.js
new file mode 100644
index 0000000000..38cd9fd25e
--- /dev/null
+++ b/src/utils/getPooledMoment.js
@@ -0,0 +1,10 @@
+import moment from 'moment';
+
+const momentPool = new Map();
+export default function getPooledMoment(dayString) {
+  if (!momentPool.has(dayString)) {
+    momentPool.set(dayString, moment(dayString));
+  }
+
+  return momentPool.get(dayString);
+}
diff --git a/test/utils/getPooledMoment_spec.js b/test/utils/getPooledMoment_spec.js
new file mode 100644
index 0000000000..7c28318270
--- /dev/null
+++ b/test/utils/getPooledMoment_spec.js
@@ -0,0 +1,24 @@
+import { expect } from 'chai';
+import moment from 'moment';
+
+import getPooledMoment from '../../src/utils/getPooledMoment';
+
+describe('getPooledMoment', () => {
+  it('returns a moment given a day string', () => {
+    const momentObj = getPooledMoment('2017-12-10');
+    expect(moment.isMoment(momentObj)).to.equal(true);
+    expect(momentObj.format('YYYY MM DD')).to.equal('2017 12 10');
+  });
+
+  it('returns the same moment given the same day string', () => {
+    const momentObj1 = getPooledMoment('2017-12-10');
+    const momentObj2 = getPooledMoment('2017-12-10');
+    expect(momentObj1).to.equal(momentObj2);
+  });
+
+  it('returns a different moment given a different day string', () => {
+    const momentObj1 = getPooledMoment('2017-12-10');
+    const momentObj2 = getPooledMoment('2017-12-11');
+    expect(momentObj1).not.to.equal(momentObj2);
+  });
+});