diff --git a/.github/calendar.yml b/.github/calendar.yml
index d7827edb02bbbc7ade26905d41ce105acd09db9d..9b86376e5a0ecb97669c4f709ddddf113bfcc7fa 100644
--- a/.github/calendar.yml
+++ b/.github/calendar.yml
@@ -27,5 +27,7 @@
   '2018-07-30 18:00, US/Pacific':    'endgame',
   '2018-08-13 12:00, US/Pacific':    'development', # 1.26.0 released
   '2018-08-27 18:00, US/Pacific':    'endgame',
-#  '2018-09-05 12:00, US/Pacific':    'development', # 1.27.0 released
+  '2018-09-05 12:00, US/Pacific':    'development', # 1.27.0 released
+  '2018-09-24 18:00, US/Pacific':    'endgame',
+#  '2018-10-03 12:00, US/Pacific':    'development', # 1.28.0 released
 }