diff --git a/spec/models/post_send_initial_notification_letter_holding_task_spec.rb b/spec/models/post_send_initial_notification_letter_holding_task_spec.rb
index 662e24f571a..8385464a8da 100644
--- a/spec/models/post_send_initial_notification_letter_holding_task_spec.rb
+++ b/spec/models/post_send_initial_notification_letter_holding_task_spec.rb
@@ -196,6 +196,8 @@
       )
     end
 
+    before { Timecop.travel(Time.zone.local(2020, 9, 1, 18, 0, 0)) }
+
     context "The TaskTimer for the hold period was not created yet" do
       it "returns the end date period" do
         expect((post_task.timer_ends_at - post_task.created_at.prev_day).to_i / 1.day).to eq(hold_days)