diff --git a/panera_shifts_gcal_backend/__init__.py b/panera_shifts_gcal_backend/__init__.py
index 55785ff..4abe1f0 100644
--- a/panera_shifts_gcal_backend/__init__.py
+++ b/panera_shifts_gcal_backend/__init__.py
@@ -19,34 +19,36 @@ def input_all_shifts_for_month():
     today = datetime.date.today()
     max_day = cal_module.monthrange(today.year, today.month)
     start = datetime.date(today.year, today.month, 1)
-    end = datetime.date(today.year, today.month, max_day[1])
-    read_from = datetime.datetime.combine(
-        start, datetime.time(0, 0, 0, 0), datetime.timezone.utc
+    end = datetime.date(today.year, today.month, max_day[1]) + datetime.timedelta(
+        days=1
     )
+
     start_dt = datetime.datetime.combine(
         start, datetime.time(0, 0, 0, 0), datetime.timezone.utc
     )
     end_dt = datetime.datetime.combine(
-        end + datetime.timedelta(days=1),
+        end,
         datetime.time(0, 0, 0, 0),
         datetime.timezone.utc,
     )
-    for event in calendar.get_events(start_dt, end_dt):
-        if event.end > read_from:
-            read_from = event.end
     panera_session = login(
         config["credentials"]["username"], config["credentials"]["password"]
     )
     shifts_info = get_shifts_between(
         panera_session,
-        datetime.date(read_from.year, read_from.month, read_from.day),
+        start,
         end,
     )
     timezone = shifts_info["data"]["timezone"]
     cafe_info = shifts_info["data"]["currentShifts"]["cafe"][0]
+    recorded_shifts = list(calendar.get_events(start_dt, end_dt))
     for shift in shifts_info["data"]["currentShifts"]["shifts"]:
         s = Shift.from_dict(shift, cafe_info, timezone)
-        if s.start > read_from:
+        conflicts = any(
+            s.start <= event.end and s.end >= event.start for event in recorded_shifts
+        )
+        if not conflicts:
+            print(f"added: {s.start}-{s.end}")
             e = s.to_Event()
             calendar.update_or_add_event(e)