From 02ab2418865fe0a801603a5fbc5892945e941616 Mon Sep 17 00:00:00 2001
From: Dominik George <nik@naturalnet.de>
Date: Sun, 10 Nov 2019 23:15:44 +0100
Subject: [PATCH] FIx off-by-one error.

---
 biscuit/apps/alsijil/views.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/biscuit/apps/alsijil/views.py b/biscuit/apps/alsijil/views.py
index 9e6538c11..69e0d9fbd 100644
--- a/biscuit/apps/alsijil/views.py
+++ b/biscuit/apps/alsijil/views.py
@@ -64,7 +64,7 @@ def lesson(request: HttpRequest, year: Optional[int] = None, week: Optional[int]
             # Iterate over personal notes and carry changed absences to following lessons
             for instance in instances:
                 instance.person.mark_absent(
-                    wanted_week[lesson_period.period.weekday],
+                    wanted_week[lesson_period.period.weekday-1],
                     lesson_period.period.period+1,
                     instance.absent,
                     instance.excused
-- 
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