diff --git a/homeassistant/components/teslemetry/calendar.py b/homeassistant/components/teslemetry/calendar.py
index 87bb2ddf9932..f64661b30313 100644
--- a/homeassistant/components/teslemetry/calendar.py
+++ b/homeassistant/components/teslemetry/calendar.py
@@ -65,9 +65,9 @@ def _parse_period_times(
     Returns None if the base_day's weekday doesn't match the period's day range.
     For periods crossing midnight, end_time will be on the following day.
     """
-    # DaysOfWeek are from 0-6 (Monday-Sunday)
+    # DaysOfWeek are from 0-6 (Monday-Sunday); Tesla omits zero values
     from_day = period_def.get("fromDayOfWeek", 0)
-    to_day = period_def.get("toDayOfWeek", 6)
+    to_day = period_def.get("toDayOfWeek", 0)
 
     if not _is_day_in_range(base_day.weekday(), from_day, to_day):
         return None
diff --git a/tests/components/teslemetry/fixtures/site_info_week_crossing.json b/tests/components/teslemetry/fixtures/site_info_week_crossing.json
index f5bdc6a824d9..da0ecb004722 100644
--- a/tests/components/teslemetry/fixtures/site_info_week_crossing.json
+++ b/tests/components/teslemetry/fixtures/site_info_week_crossing.json
@@ -123,10 +123,7 @@
             "WEEKEND": {
               "periods": [
                 {
-                  "fromDayOfWeek": 4,
-                  "toDayOfWeek": 0,
-                  "fromHour": 0,
-                  "toHour": 0
+                  "fromDayOfWeek": 4
                 }
               ]
             }
@@ -166,10 +163,7 @@
               "WEEKEND": {
                 "periods": [
                   {
-                    "fromDayOfWeek": 4,
-                    "toDayOfWeek": 0,
-                    "fromHour": 0,
-                    "toHour": 0
+                    "fromDayOfWeek": 4
                   }
                 ]
               }