diff --git a/app/javascript/controllers/deadline_day_controller.js b/app/javascript/controllers/deadline_day_controller.js
index ea3ff2c871..eb1d0fbeb5 100644
--- a/app/javascript/controllers/deadline_day_controller.js
+++ b/app/javascript/controllers/deadline_day_controller.js
@@ -47,7 +47,7 @@ export default class extends Controller {
 
     if (this.byDayOfMonthTarget.checked && this.dayOfMonthTarget.value) {
       const rule = new RRule({
-        dtstart: today,
+        dtstart: new Date(Date.UTC(today.getFullYear(), today.getMonth(), today.getDate(), 12)),
         freq: RRule.MONTHLY,
         interval: monthlyInterval,
         bymonthday: parseInt(this.dayOfMonthTarget.value),
@@ -57,7 +57,7 @@ export default class extends Controller {
     }
     if (this.byDayOfWeekTarget.checked && this.everyNthDayTarget.value && (this.dayOfWeekTarget.value)) {
       const rule = new RRule({
-        dtstart: today,
+        dtstart: new Date(Date.UTC(today.getFullYear(), today.getMonth(), today.getDate(), 12)),
         freq: RRule.MONTHLY,
         interval: monthlyInterval,
         byweekday: WEEKDAY_NUM_TO_OBJ[ parseInt(this.dayOfWeekTarget.value) ].nth( parseInt(this.everyNthDayTarget.value) ),
diff --git a/spec/support/deadline_day_fields_shared_example.rb b/spec/support/deadline_day_fields_shared_example.rb
index 48843e3892..8b34b14389 100644
--- a/spec/support/deadline_day_fields_shared_example.rb
+++ b/spec/support/deadline_day_fields_shared_example.rb
@@ -74,6 +74,11 @@ def safe_subtract_days(date, num)
     expect(page).to have_content("Deadline day must be between 1 and 28")
   end
 
+  # These tests make assertions about the dates calculated by the javascript in deadline_day_controller.js
+  # Because we currently don't have a great way of spoofing the date the headless browser sees during tests, they
+  # cannot effectively set the date for the tests (like with travel_to) and have to make due with the actual datetime
+  # of whenever the test is run. To the best of my knowledge, the tests are sound but be aware that they could
+  # pass or fail based on when they are run!
   describe "reported reminder and deadline dates" do
     context "when the reminder is a day of the month" do
       before do