diff --git a/webpack/JobInvocationDetail/JobInvocationActions.js b/webpack/JobInvocationDetail/JobInvocationActions.js
index 131696068..e89bdeeb0 100644
--- a/webpack/JobInvocationDetail/JobInvocationActions.js
+++ b/webpack/JobInvocationDetail/JobInvocationActions.js
@@ -12,6 +12,7 @@ import {
   CHANGE_ENABLED_RECURRING_LOGIC,
   GET_TASK,
   JOB_INVOCATION_KEY,
+  POLLING_INTERVAL_MS,
   UPDATE_JOB,
 } from './JobInvocationConstants';
 
@@ -32,7 +33,7 @@ export const getJobInvocation = url => dispatch => {
         response?.data?.error?.message ||
         'Error',
     }),
-    1000
+    POLLING_INTERVAL_MS
   );
 
   dispatch(fetchData);
diff --git a/webpack/JobInvocationDetail/JobInvocationConstants.js b/webpack/JobInvocationDetail/JobInvocationConstants.js
index 12d6deb11..79352913c 100644
--- a/webpack/JobInvocationDetail/JobInvocationConstants.js
+++ b/webpack/JobInvocationDetail/JobInvocationConstants.js
@@ -20,6 +20,13 @@ export const DIRECT_OPEN_HOST_LIMIT = 3;
 export const ALL_JOB_HOSTS = 'ALL_JOB_HOSTS';
 export const AWAITING_STATUS_FILTER = '(job_invocation.result = N/A)';
 
+export const POLLING_INTERVAL_MS = 1000;
+export const AUTO_REFRESH_INTERVAL_MS = 5000;
+export const UNIX_TO_JS_TIMESTAMP_FACTOR = 1000;
+export const DEFAULT_CHART_LEGEND_WIDTH = 270;
+export const CLIPBOARD_COPIED_EXIT_DELAY_MS = 1500;
+export const CLIPBOARD_DEFAULT_EXIT_DELAY_MS = 600;
+
 export const showTemplateInvocationUrl = (hostID, jobID) =>
   `/show_template_invocation_by_host/${hostID}/job_invocation/${jobID}`;
 export const LIST_TEMPLATE_INVOCATIONS = 'LIST_TEMPLATE_INVOCATIONS';
diff --git a/webpack/JobInvocationDetail/JobInvocationSystemStatusChart.js b/webpack/JobInvocationDetail/JobInvocationSystemStatusChart.js
index f44f9b707..77a46e3c7 100644
--- a/webpack/JobInvocationDetail/JobInvocationSystemStatusChart.js
+++ b/webpack/JobInvocationDetail/JobInvocationSystemStatusChart.js
@@ -23,7 +23,10 @@ import {
   global_palette_blue_300 as inProgressColor,
   global_palette_green_500 as successedColor,
 } from '@patternfly/react-tokens';
-import { STATUS_TITLES } from './JobInvocationConstants';
+import {
+  STATUS_TITLES,
+  DEFAULT_CHART_LEGEND_WIDTH,
+} from './JobInvocationConstants';
 import './JobInvocationDetail.scss';
 
 const JobInvocationSystemStatusChart = ({
@@ -52,7 +55,7 @@ const JobInvocationSystemStatusChart = ({
     return '0';
   };
   const chartSize = 105;
-  const [legendWidth, setLegendWidth] = useState(270);
+  const [legendWidth, setLegendWidth] = useState(DEFAULT_CHART_LEGEND_WIDTH);
 
   // Calculates chart legend width based on its content
   useEffect(() => {
diff --git a/webpack/JobInvocationDetail/TemplateInvocation.js b/webpack/JobInvocationDetail/TemplateInvocation.js
index 9045be218..faad034f8 100644
--- a/webpack/JobInvocationDetail/TemplateInvocation.js
+++ b/webpack/JobInvocationDetail/TemplateInvocation.js
@@ -11,6 +11,9 @@ import {
   showTemplateInvocationUrl,
   templateInvocationPageUrl,
   GET_TEMPLATE_INVOCATION,
+  CLIPBOARD_COPIED_EXIT_DELAY_MS,
+  CLIPBOARD_DEFAULT_EXIT_DELAY_MS,
+  AUTO_REFRESH_INTERVAL_MS,
 } from './JobInvocationConstants';
 import {
   selectTemplateInvocationStatus,
@@ -41,7 +44,11 @@ const CopyToClipboard = ({ fullOutput }) => {
       textId="code-content"
       aria-label="Copy to clipboard"
       onClick={e => onClick(e, fullOutput)}
-      exitDelay={copied ? 1500 : 600}
+      exitDelay={
+        copied
+          ? CLIPBOARD_COPIED_EXIT_DELAY_MS
+          : CLIPBOARD_DEFAULT_EXIT_DELAY_MS
+      }
       maxWidth="110px"
       variant="plain"
       onTooltipHidden={() => setCopied(false)}
@@ -111,7 +118,7 @@ export const TemplateInvocation = ({
         } else if (intervalRef.current) {
           clearInterval(intervalRef.current);
         }
-      }, 5000);
+      }, AUTO_REFRESH_INTERVAL_MS);
     }
 
     return () => {
diff --git a/webpack/JobInvocationDetail/TemplateInvocationComponents/OutputCodeBlock.js b/webpack/JobInvocationDetail/TemplateInvocationComponents/OutputCodeBlock.js
index 759b7b280..3a4a57644 100644
--- a/webpack/JobInvocationDetail/TemplateInvocationComponents/OutputCodeBlock.js
+++ b/webpack/JobInvocationDetail/TemplateInvocationComponents/OutputCodeBlock.js
@@ -7,6 +7,7 @@ import React, {
 import PropTypes from 'prop-types';
 import { Button } from '@patternfly/react-core';
 import { translate as __ } from 'foremanReact/common/I18n';
+import { UNIX_TO_JS_TIMESTAMP_FACTOR } from '../JobInvocationConstants';
 
 export const OutputCodeBlock = ({ code, showOutputType, scrollElement }) => {
   let lineCounter = 0;
@@ -122,7 +123,9 @@ export const OutputCodeBlock = ({ code, showOutputType, scrollElement }) => {
         <div key={index} className={`line ${line.output_type}`}>
           <span
             className="counter"
-            title={new Date(line.timestamp * 1000).toISOString()}
+            title={new Date(
+              line.timestamp * UNIX_TO_JS_TIMESTAMP_FACTOR
+            ).toISOString()}
           >
             {lineCounter.toString().padStart(4, '\u00A0')}:{' '}
           </span>
diff --git a/webpack/JobWizard/JobWizard.js b/webpack/JobWizard/JobWizard.js
index 68f2a820c..8e244c628 100644
--- a/webpack/JobWizard/JobWizard.js
+++ b/webpack/JobWizard/JobWizard.js
@@ -18,6 +18,7 @@ import {
   WIZARD_TITLES,
   SCHEDULE_TYPES,
   initialScheduleState,
+  STARTS_ERROR_CHECK_INTERVAL_MS,
 } from './JobWizardConstants';
 import {
   selectTemplateError,
@@ -237,7 +238,10 @@ export const JobWizard = ({ rerunData }) => {
       }
     };
     updateStartsError();
-    const interval = setInterval(updateStartsError, 5000);
+    const interval = setInterval(
+      updateStartsError,
+      STARTS_ERROR_CHECK_INTERVAL_MS
+    );
 
     return () => {
       interval && clearInterval(interval);
diff --git a/webpack/JobWizard/JobWizardConstants.js b/webpack/JobWizard/JobWizardConstants.js
index ca1bfcdc0..a1db56bca 100644
--- a/webpack/JobWizard/JobWizardConstants.js
+++ b/webpack/JobWizard/JobWizardConstants.js
@@ -78,3 +78,12 @@ export const HOST_IDS = 'HOST_IDS';
 export const REX_FEATURE = 'REX_FEATURE';
 
 export const JOB_API_KEY = 'JOB_API_KEY';
+
+export const MINUTES_IN_HOUR = 60;
+export const DAYS_IN_WEEK = 7;
+export const SUNDAY_BASE_YEAR = 2017;
+export const DEFAULT_MINUTE_OPTIONS = [0, 15, 30, 45];
+export const MS_PER_MINUTE = 60000;
+export const STARTS_ERROR_CHECK_INTERVAL_MS = 5000;
+export const DATE_PADDING_SLICE = -2;
+export const DEBOUNCE_INPUT_MS = 1000;
diff --git a/webpack/JobWizard/steps/Schedule/RepeatHour.js b/webpack/JobWizard/steps/Schedule/RepeatHour.js
index 28e8f588e..90a7ff0a6 100644
--- a/webpack/JobWizard/steps/Schedule/RepeatHour.js
+++ b/webpack/JobWizard/steps/Schedule/RepeatHour.js
@@ -13,12 +13,16 @@ import {
 } from '@patternfly/react-core/deprecated';
 import { translate as __ } from 'foremanReact/common/I18n';
 import { helpLabel } from '../form/FormHelpers';
+import {
+  MINUTES_IN_HOUR,
+  DEFAULT_MINUTE_OPTIONS,
+} from '../../JobWizardConstants';
 
 export const RepeatHour = ({ repeatData, setRepeatData }) => {
   const isValidMinute = newMinute =>
     Number.isInteger(parseInt(newMinute, 10)) &&
     newMinute >= 0 &&
-    newMinute < 60;
+    newMinute < MINUTES_IN_HOUR;
 
   const { minute } = repeatData;
   useEffect(() => {
@@ -27,7 +31,7 @@ export const RepeatHour = ({ repeatData, setRepeatData }) => {
     }
   }, [minute, setRepeatData]);
   const [minuteOpen, setMinuteOpen] = useState(false);
-  const [options, setOptions] = useState([0, 15, 30, 45]);
+  const [options, setOptions] = useState(DEFAULT_MINUTE_OPTIONS);
   const [isAlertOpen, setIsAlertOpen] = useState(false);
   return (
     <FormGroup
diff --git a/webpack/JobWizard/steps/Schedule/RepeatWeek.js b/webpack/JobWizard/steps/Schedule/RepeatWeek.js
index 770925b4c..034a77ee3 100644
--- a/webpack/JobWizard/steps/Schedule/RepeatWeek.js
+++ b/webpack/JobWizard/steps/Schedule/RepeatWeek.js
@@ -4,13 +4,14 @@ import { FormGroup, Checkbox } from '@patternfly/react-core';
 import { translate as __, documentLocale } from 'foremanReact/common/I18n';
 import { RepeatDaily } from './RepeatDaily';
 import { noop } from '../../../helpers';
+import { SUNDAY_BASE_YEAR, DAYS_IN_WEEK } from '../../JobWizardConstants';
 
 export const getWeekDays = () => {
   const locale = documentLocale().replace(/-/g, '_');
-  const baseDate = new Date(Date.UTC(2017, 0, 1)); // just a Sunday
+  const baseDate = new Date(Date.UTC(SUNDAY_BASE_YEAR, 0, 1)); // just a Sunday
   const weekDays = [];
   const formatOptions = { weekday: 'short', timeZone: 'UTC' };
-  for (let i = 0; i < 7; i++) {
+  for (let i = 0; i < DAYS_IN_WEEK; i++) {
     try {
       weekDays.push(baseDate.toLocaleDateString(locale, formatOptions));
     } catch {
diff --git a/webpack/JobWizard/steps/Schedule/ScheduleRecurring.js b/webpack/JobWizard/steps/Schedule/ScheduleRecurring.js
index 6668a9924..d2427b896 100644
--- a/webpack/JobWizard/steps/Schedule/ScheduleRecurring.js
+++ b/webpack/JobWizard/steps/Schedule/ScheduleRecurring.js
@@ -13,7 +13,7 @@ import {
 import { ExclamationCircleIcon } from '@patternfly/react-icons';
 import { translate as __ } from 'foremanReact/common/I18n';
 import { RepeatOn } from './RepeatOn';
-import { SCHEDULE_TYPES } from '../../JobWizardConstants';
+import { SCHEDULE_TYPES, MS_PER_MINUTE } from '../../JobWizardConstants';
 import { PurposeField } from './PurposeField';
 import { DateTimePicker } from '../form/DateTimePicker';
 import { WizardTitle } from '../form/WizardTitle';
@@ -114,7 +114,7 @@ export const ScheduleRecurring = ({
                   setScheduleValue(current => ({
                     ...current,
                     startsAt: new Date(
-                      new Date().getTime() + 60000
+                      new Date().getTime() + MS_PER_MINUTE
                     ).toISOString(), // 1 minute in the future
                     isFuture: true,
                   }))
diff --git a/webpack/JobWizard/steps/Schedule/ScheduleType.js b/webpack/JobWizard/steps/Schedule/ScheduleType.js
index 77862c1f4..07857fa40 100644
--- a/webpack/JobWizard/steps/Schedule/ScheduleType.js
+++ b/webpack/JobWizard/steps/Schedule/ScheduleType.js
@@ -6,6 +6,7 @@ import {
   WIZARD_TITLES,
   SCHEDULE_TYPES,
   repeatTypes,
+  MS_PER_MINUTE,
 } from '../../JobWizardConstants';
 import { WizardTitle } from '../form/WizardTitle';
 import { QueryType } from './QueryType';
@@ -49,7 +50,9 @@ export const ScheduleType = ({
           onChange={() => {
             setScheduleValue(current => ({
               ...current,
-              startsAt: new Date(new Date().getTime() + 60000).toISOString(), // 1 minute in the future
+              startsAt: new Date(
+                new Date().getTime() + MS_PER_MINUTE
+              ).toISOString(), // 1 minute in the future
               scheduleType: SCHEDULE_TYPES.FUTURE,
               repeatType: repeatTypes.noRepeat,
             }));
diff --git a/webpack/JobWizard/steps/form/DateTimePicker.js b/webpack/JobWizard/steps/form/DateTimePicker.js
index 4c12012b6..2917d968e 100644
--- a/webpack/JobWizard/steps/form/DateTimePicker.js
+++ b/webpack/JobWizard/steps/form/DateTimePicker.js
@@ -7,13 +7,19 @@ import {
 } from '@patternfly/react-core';
 import { debounce } from 'lodash';
 import { translate as __, documentLocale } from 'foremanReact/common/I18n';
+import {
+  DATE_PADDING_SLICE,
+  DEBOUNCE_INPUT_MS,
+} from '../../JobWizardConstants';
 
 const formatDateTime = d =>
   `${d.getFullYear()}-${`0${d.getMonth() + 1}`.slice(
-    -2
-  )}-${`0${d.getDate()}`.slice(-2)} ${`0${d.getHours()}`.slice(
-    -2
-  )}:${`0${d.getMinutes()}`.slice(-2)}:${`0${d.getSeconds()}`.slice(-2)}`;
+    DATE_PADDING_SLICE
+  )}-${`0${d.getDate()}`.slice(DATE_PADDING_SLICE)} ${`0${d.getHours()}`.slice(
+    DATE_PADDING_SLICE
+  )}:${`0${d.getMinutes()}`.slice(
+    DATE_PADDING_SLICE
+  )}:${`0${d.getSeconds()}`.slice(DATE_PADDING_SLICE)}`;
 
 export const DateTimePicker = ({
   dateTime,
@@ -103,7 +109,7 @@ export const DateTimePicker = ({
         aria-label={`${ariaLabel} datepicker`}
         value={formattedDate}
         placeholder="yyyy/mm/dd"
-        onChange={debounce(onDateChange, 1000, {
+        onChange={debounce(onDateChange, DEBOUNCE_INPUT_MS, {
           leading: false,
           trailing: true,
         })}
@@ -123,7 +129,7 @@ export const DateTimePicker = ({
         time={dateTime ? dateObject.toString() : ''}
         inputProps={dateTime ? {} : { value: '' }}
         placeholder={includeSeconds ? 'hh:mm:ss' : 'hh:mm'}
-        onChange={debounce(onTimeChange, 1000, {
+        onChange={debounce(onTimeChange, DEBOUNCE_INPUT_MS, {
           leading: false,
           trailing: true,
         })}
diff --git a/webpack/react_app/components/TargetingHosts/TargetingHostsConsts.js b/webpack/react_app/components/TargetingHosts/TargetingHostsConsts.js
index 5fd27d8c8..3642c0393 100644
--- a/webpack/react_app/components/TargetingHosts/TargetingHostsConsts.js
+++ b/webpack/react_app/components/TargetingHosts/TargetingHostsConsts.js
@@ -1,2 +1,3 @@
 export const TARGETING_HOSTS = 'TARGETING_HOSTS';
 export const TARGETING_HOSTS_AUTOCOMPLETE = 'targeting_hosts_search';
+export const TARGETING_HOSTS_POLLING_INTERVAL_MS = 1000;
diff --git a/webpack/react_app/components/TargetingHosts/index.js b/webpack/react_app/components/TargetingHosts/index.js
index 76f1ec728..415fb660b 100644
--- a/webpack/react_app/components/TargetingHosts/index.js
+++ b/webpack/react_app/components/TargetingHosts/index.js
@@ -17,7 +17,10 @@ import {
   selectStatusFilter,
 } from './TargetingHostsSelectors';
 import { getApiUrl } from './TargetingHostsHelpers';
-import { TARGETING_HOSTS } from './TargetingHostsConsts';
+import {
+  TARGETING_HOSTS,
+  TARGETING_HOSTS_POLLING_INTERVAL_MS,
+} from './TargetingHostsConsts';
 import TargetingHostsPage from './TargetingHostsPage';
 import { chartFilter } from '../../redux/actions/jobInvocations';
 
@@ -100,7 +103,7 @@ const WrappedTargetingHosts = () => {
             dispatch(stopInterval(TARGETING_HOSTS));
           },
         }),
-        1000
+        TARGETING_HOSTS_POLLING_INTERVAL_MS
       ),
     [dispatch]
   );
diff --git a/webpack/react_app/redux/actions/jobInvocations/index.js b/webpack/react_app/redux/actions/jobInvocations/index.js
index 968d83923..885712656 100644
--- a/webpack/react_app/redux/actions/jobInvocations/index.js
+++ b/webpack/react_app/redux/actions/jobInvocations/index.js
@@ -5,6 +5,7 @@ import {
   JOB_INVOCATIONS_GET_JOB_INVOCATIONS,
   JOB_INVOCATIONS_POLLING_STARTED,
   JOB_INVOCATIONS_JOB_FINISHED,
+  HTTP_UNAUTHORIZED,
 } from '../../consts';
 
 const defaultJobInvocationsPollingInterval = 1000;
@@ -32,7 +33,7 @@ const getJobInvocations = url => async (dispatch, getState) => {
   }
 
   function onGetJobInvocationsFailed(error) {
-    if (error.response.status === 401) {
+    if (error.response.status === HTTP_UNAUTHORIZED) {
       window.location.replace('/users/login');
     }
   }
diff --git a/webpack/react_app/redux/consts.js b/webpack/react_app/redux/consts.js
index 02c09fc35..1cdc74474 100644
--- a/webpack/react_app/redux/consts.js
+++ b/webpack/react_app/redux/consts.js
@@ -3,3 +3,4 @@ export const JOB_INVOCATIONS_POLLING_STARTED =
 export const JOB_INVOCATIONS_GET_JOB_INVOCATIONS =
   'JOB_INVOCATIONS_GET_JOB_INVOCATIONS';
 export const JOB_INVOCATIONS_JOB_FINISHED = 'JOB_INVOCATIONS_JOB_FINISHED';
+export const HTTP_UNAUTHORIZED = 401;