From 85956dc7fd1e2072321486ea2abf94c308de03b2 Mon Sep 17 00:00:00 2001
From: Bram Kragten <mail@bramkragten.nl>
Date: Thu, 7 Oct 2021 15:26:41 +0200
Subject: [PATCH] Fix error in `reduceSumStatisticsByDay` (#10170)

---
 src/data/history.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/data/history.ts b/src/data/history.ts
index 243e457960..a163ea4708 100644
--- a/src/data/history.ts
+++ b/src/data/history.ts
@@ -490,7 +490,7 @@ export const reduceSumStatisticsByDay = (
     // add init value if the first value isn't end of previous period
     result.push({
       ...values[0]!,
-      start: startOfMonth(addDays(new Date(values[0].start), -1)).toISOString(),
+      start: startOfDay(addDays(new Date(values[0].start), -1)).toISOString(),
     });
   }
   let lastValue: StatisticValue;
@@ -546,7 +546,7 @@ export const reduceSumStatisticsByMonth = (
       prevMonth = month;
     }
     if (prevMonth !== month) {
-      // Last value of the day
+      // Last value of the month
       result.push({
         ...lastValue!,
         start: startOfMonth(new Date(lastValue!.start)).toISOString(),