diff --git a/lib/utils/date-utils.js b/lib/utils/date-utils.js
--- a/lib/utils/date-utils.js
+++ b/lib/utils/date-utils.js
@@ -69,6 +69,10 @@
   return dateFormat(dateFromString(dayString), 'dddd, mmmm dS, yyyy');
 }
 
+function prettyDateWithoutDay(dayString: string): string {
+  return dateFormat(dateFromString(dayString), 'mmmm dS, yyyy');
+}
+
 function dateFromString(dayString: string): Date {
   const matches = dayString.match(/^([0-9]+)-([0-1][0-9])-([0-3][0-9])$/);
   invariant(matches && matches.length === 4, `invalid dayString ${dayString}`);
@@ -155,6 +159,7 @@
   fifteenDaysEarlier,
   fifteenDaysLater,
   prettyDate,
+  prettyDateWithoutDay,
   dateFromString,
   shortAbsoluteDate,
   longAbsoluteDate,
diff --git a/web/modals/history/history-modal.react.js b/web/modals/history/history-modal.react.js
--- a/web/modals/history/history-modal.react.js
+++ b/web/modals/history/history-modal.react.js
@@ -1,7 +1,6 @@
 // @flow
 
 import classNames from 'classnames';
-import dateFormat from 'dateformat';
 import invariant from 'invariant';
 import _filter from 'lodash/fp/filter';
 import _flow from 'lodash/fp/flow';
@@ -31,7 +30,7 @@
   useServerCall,
   useDispatchActionPromise,
 } from 'lib/utils/action-utils';
-import { dateFromString } from 'lib/utils/date-utils';
+import { prettyDateWithoutDay } from 'lib/utils/date-utils';
 
 import LoadingIndicator from '../../loading-indicator.react';
 import { useSelector } from '../../redux/redux-utils';
@@ -101,8 +100,7 @@
         </a>
       );
     }
-    const historyDate = dateFromString(this.props.dayString);
-    const prettyDate = dateFormat(historyDate, 'mmmm dS, yyyy');
+    const prettyDate = prettyDateWithoutDay(this.props.dayString);
     const loadingStatus =
       this.state.mode === 'day'
         ? this.props.dayLoadingStatus