From c81cd4feab4f29cbede7cdad449fa14e435addbf Mon Sep 17 00:00:00 2001
From: Sandy Spicer <sandy@posthog.com>
Date: Mon, 5 Aug 2024 13:11:53 +0200
Subject: [PATCH] mypy

---
 posthog/hogql_queries/insights/retention_query_runner.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/posthog/hogql_queries/insights/retention_query_runner.py b/posthog/hogql_queries/insights/retention_query_runner.py
index 7df621e5241bc..f5d817e2eb7f8 100644
--- a/posthog/hogql_queries/insights/retention_query_runner.py
+++ b/posthog/hogql_queries/insights/retention_query_runner.py
@@ -373,7 +373,9 @@ def get_date(self, first_interval):
             first_interval, self.query_date_range.interval_name.title()
         )
         if self.query_date_range.interval_type == IntervalType.HOUR:
-            date = date + self.team.timezone_info.utcoffset(date)
+            utfoffset = self.team.timezone_info.utcoffset(date)
+            if utfoffset is not None:
+                date = date + utfoffset
         return date
 
     def calculate(self) -> RetentionQueryResponse: