diff --git a/flow-typed/publish.js b/flow-typed/publish.js
index 237380016..5f9daa4f1 100644
--- a/flow-typed/publish.js
+++ b/flow-typed/publish.js
@@ -14,6 +14,9 @@ declare type UpdatePublishFormData = {
   thumbnailError?: boolean,
   description?: string,
   language?: string,
+  releaseTime?: number,
+  releaseTimeEdited?: number,
+  releaseTimeError?: string,
   channel?: string,
   channelId?: string,
   name?: string,
diff --git a/static/app-strings.json b/static/app-strings.json
index b0e70cf25..1e3b467ef 100644
--- a/static/app-strings.json
+++ b/static/app-strings.json
@@ -1939,6 +1939,8 @@
   "Release date": "Release date",
   "Scheduled for": "Scheduled for",
   "Set custom release date": "Set custom release date",
+  "Cannot set to a future date.": "Cannot set to a future date.",
+  "Invalid date/time.": "Invalid date/time.",
   "Now": "Now",
   "Set to current date and time": "Set to current date and time",
   "Remove custom release date": "Remove custom release date",
diff --git a/ui/component/publishForm/view.jsx b/ui/component/publishForm/view.jsx
index 4fb02c77d..cffc255ab 100644
--- a/ui/component/publishForm/view.jsx
+++ b/ui/component/publishForm/view.jsx
@@ -54,6 +54,7 @@ type Props = {
   thumbnailPath: ?string,
   description: ?string,
   language: string,
+  releaseTimeError: ?string,
   nsfw: boolean,
   contentIsFree: boolean,
   fee: {
@@ -109,6 +110,7 @@ function PublishForm(props: Props) {
     title,
     bid,
     bidError,
+    releaseTimeError,
     uploadThumbnailStatus,
     resetThumbnailStatus,
     updatePublishForm,
@@ -236,6 +238,7 @@ function PublishForm(props: Props) {
     bid &&
     thumbnail &&
     !bidError &&
+    !releaseTimeError &&
     !emptyPostError &&
     !(thumbnailError && !thumbnailUploaded) &&
     !(uploadThumbnailStatus === THUMBNAIL_STATUSES.IN_PROGRESS);
diff --git a/ui/component/publishReleaseDate/index.js b/ui/component/publishReleaseDate/index.js
index 962afce19..e7a1e4fee 100644
--- a/ui/component/publishReleaseDate/index.js
+++ b/ui/component/publishReleaseDate/index.js
@@ -6,6 +6,7 @@ import PublishReleaseDate from './view';
 const select = (state) => ({
   releaseTime: makeSelectPublishFormValue('releaseTime')(state),
   releaseTimeEdited: makeSelectPublishFormValue('releaseTimeEdited')(state),
+  releaseTimeError: makeSelectPublishFormValue('releaseTimeError')(state),
 });
 
 const perform = (dispatch) => ({
diff --git a/ui/component/publishReleaseDate/view.jsx b/ui/component/publishReleaseDate/view.jsx
index 1abf0f84b..8639bcd13 100644
--- a/ui/component/publishReleaseDate/view.jsx
+++ b/ui/component/publishReleaseDate/view.jsx
@@ -14,6 +14,7 @@ function dateToLinuxTimestamp(date: Date) {
 const NOW = 'now';
 const DEFAULT = 'default';
 const RESET_TO_ORIGINAL = 'reset-to-original';
+const FUTURE_DATE_ERROR = 'Cannot set to a future date.';
 
 type Props = {
   releaseTime: ?number,
@@ -35,6 +36,7 @@ const PublishReleaseDate = (props: Props) => {
   } = props;
   const maxDate = useMaxDate ? new Date() : undefined;
   const [date, setDate] = React.useState(releaseTime ? linuxTimestampToDate(releaseTime) : new Date());
+  const [error, setError] = React.useState([]);
 
   const isNew = releaseTime === undefined;
   const isEdit = !isNew || allowDefault === false;
@@ -45,7 +47,38 @@ const PublishReleaseDate = (props: Props) => {
   // const showDatePicker = isEdit || releaseTimeEdited !== undefined;
   const showDatePicker = true;
 
+  const updateError = (action, error) => {
+    switch (action) {
+      case 'remove':
+        setError((prev) => prev.filter((x) => x !== error));
+        break;
+
+      case 'clear':
+        setError([]);
+        break;
+
+      case 'add':
+        setError((prev) => {
+          const nextError = prev.slice();
+          if (!nextError.includes(error)) {
+            nextError.push(error);
+            return nextError;
+          }
+          return prev;
+        });
+        break;
+    }
+  };
+
   const onDateTimePickerChanged = (value) => {
+    const isValueInFuture = maxDate && value && value.getTime() > maxDate.getTime();
+    if (isValueInFuture) {
+      updateError('add', FUTURE_DATE_ERROR);
+      return;
+    }
+
+    updateError('remove', FUTURE_DATE_ERROR);
+
     if (value) {
       newDate(value);
     } else {
@@ -60,6 +93,8 @@ const PublishReleaseDate = (props: Props) => {
   };
 
   function newDate(value: string | Date) {
+    updateError('clear', FUTURE_DATE_ERROR);
+
     switch (value) {
       case NOW:
         const newDate = new Date();
@@ -88,23 +123,38 @@ const PublishReleaseDate = (props: Props) => {
     }
   }
 
+  function handleBlur(event) {
+    if (event.target.name === 'minute' || event.target.name === 'day') {
+      const validity = event?.target?.validity;
+      if (validity.rangeOverflow || validity.rangeUnderflow) {
+        updateError('add', event.target.name);
+      } else if (error.includes(event.target.name)) {
+        updateError('remove', event.target.name);
+      }
+    }
+  }
+
   useEffect(() => {
     return () => {
       updatePublishForm({ releaseTimeEdited: undefined });
     };
   }, []);
 
+  useEffect(() => {
+    updatePublishForm({ releaseTimeError: error.join(';') });
+  }, [error]);
+
   return (
     <div className="form-field-date-picker">
       <label>{__('Release date')}</label>
-      <div className="controls">
+      <div className="form-field-date-picker__controls">
         {showDatePicker && (
           <DateTimePicker
             className="date-picker-input"
             calendarClassName="form-field-calendar"
+            onBlur={handleBlur}
             onChange={onDateTimePickerChanged}
             value={date}
-            maxDate={maxDate}
             format="y-MM-dd h:mm a"
             disableClock
             clearIcon={null}
@@ -142,6 +192,12 @@ const PublishReleaseDate = (props: Props) => {
             onClick={() => newDate(DEFAULT)}
           />
         )}
+        {error.length > 0 && (
+          <span className="form-field-date-picker__error">
+            {error.includes(FUTURE_DATE_ERROR) && <span>{__(FUTURE_DATE_ERROR)}</span>}
+            {(!error.includes(FUTURE_DATE_ERROR) || error.length > 1) && <span>{__('Invalid date/time.')}</span>}
+          </span>
+        )}
       </div>
     </div>
   );
diff --git a/ui/redux/reducers/publish.js b/ui/redux/reducers/publish.js
index f9a99fde9..23d481cb7 100644
--- a/ui/redux/reducers/publish.js
+++ b/ui/redux/reducers/publish.js
@@ -78,6 +78,7 @@ const defaultState: PublishState = {
   language: '',
   releaseTime: undefined,
   releaseTimeEdited: undefined,
+  releaseTimeError: false,
   releaseAnytime: false,
   nsfw: false,
   channel: CHANNEL_ANONYMOUS,
diff --git a/ui/scss/component/_form-field.scss b/ui/scss/component/_form-field.scss
index 40492d99c..f8c9c22d5 100644
--- a/ui/scss/component/_form-field.scss
+++ b/ui/scss/component/_form-field.scss
@@ -596,15 +596,6 @@ fieldset-section {
     display: block;
   }
 
-  .controls {
-    display: flex;
-
-    .date-picker-input,
-    .button--link {
-      margin-right: var(--spacing-m);
-    }
-  }
-
   .react-datetime-picker__button {
     svg {
       stroke: var(--color-text);
@@ -802,6 +793,32 @@ fieldset-section {
   }
 }
 
+.form-field-date-picker__header {
+  display: flex;
+
+  label {
+    margin-right: var(--spacing-m);
+  }
+}
+
+.form-field-date-picker__error {
+  color: var(--color-error);
+  align-self: center;
+
+  span {
+    margin-right: var(--spacing-xs);
+  }
+}
+
+.form-field-date-picker__controls {
+  display: flex;
+
+  .date-picker-input,
+  .button--link {
+    margin-right: var(--spacing-m);
+  }
+}
+
 .form-field-calendar {
   border-radius: var(--border-radius);
   border: 1px solid var(--color-border);