diff --git a/docs/sources/alerting/manage-notifications/mute-timings.md b/docs/sources/alerting/manage-notifications/mute-timings.md
index 0618393e13f..e21be431ec6 100644
--- a/docs/sources/alerting/manage-notifications/mute-timings.md
+++ b/docs/sources/alerting/manage-notifications/mute-timings.md
@@ -63,7 +63,7 @@ A time interval is a definition for a moment in time. If an alert fires during t
 
 Supported time interval options are:
 
-- Time range: The time inclusive of the starting time and exclusive of the end time in UTC.
+- Time range: The time inclusive of the start and exclusive of the end time (in UTC if no location has been selected, otherwise local time).
 - Days of the week: The day or range of days of the week. Example: `monday:thursday`.
 - Days of the month: The date 1-31 of a month. Negative values can also be used to represent days that begin at the end of the month. For example: `-1` for the last day of the month.
 - Months: The months of the year in either numerical or the full calendar month. For example: `1, may:august`.
diff --git a/public/app/features/alerting/unified/components/mute-timings/MuteTimingTimeRange.tsx b/public/app/features/alerting/unified/components/mute-timings/MuteTimingTimeRange.tsx
index 1e5517b63cc..9ce8a96faae 100644
--- a/public/app/features/alerting/unified/components/mute-timings/MuteTimingTimeRange.tsx
+++ b/public/app/features/alerting/unified/components/mute-timings/MuteTimingTimeRange.tsx
@@ -35,7 +35,7 @@ export const MuteTimingTimeRange = ({ intervalIndex }: Props) => {
       <Field
         className={styles.field}
         label="Time range"
-        description="The time inclusive of the starting time and exclusive of the end time in UTC"
+        description="The time inclusive of the start and exclusive of the end time (in UTC if no location has been selected, otherwise local time)"
         invalid={timeRangeInvalid}
       >
         <>