diff --git a/systemd/libguides-notifier.timer b/systemd/libguides-notifier.timer
index 67b2736..4339c8e 100644
--- a/systemd/libguides-notifier.timer
+++ b/systemd/libguides-notifier.timer
@@ -7,7 +7,8 @@ Description=Schedule main.py with catch-up if missed
 # OnCalendar=daily
 # OnCalendar=Mon..Fri 09:00
 # See man systemd.time for syntax.
-OnCalendar=hourly
+OnCalendar=*-*-03,17 09:00:00
+Timezone=America/New_York
 Persistent=true
 AccuracySec=1m
 RandomizedDelaySec=5m