diff --git a/app/assets/javascripts/discourse/models/topic-timer.js.es6 b/app/assets/javascripts/discourse/models/topic-timer.js.es6
index 909ff9c3652..12b2b31ce9a 100644
--- a/app/assets/javascripts/discourse/models/topic-timer.js.es6
+++ b/app/assets/javascripts/discourse/models/topic-timer.js.es6
@@ -6,8 +6,7 @@ const TopicTimer = RestModel.extend({});
 TopicTimer.reopenClass({
   updateStatus(topicId, time, basedOnLastPost, statusType, categoryId) {
     let data = {
-      time: time,
-      timezone_offset: (new Date().getTimezoneOffset()),
+      time,
       status_type: statusType
     };
 
diff --git a/app/controllers/topics_controller.rb b/app/controllers/topics_controller.rb
index 69717e3587c..7e0e8a58f8c 100644
--- a/app/controllers/topics_controller.rb
+++ b/app/controllers/topics_controller.rb
@@ -287,7 +287,7 @@ class TopicsController < ApplicationController
   end
 
   def timer
-    params.permit(:time, :timezone_offset, :based_on_last_post, :category_id)
+    params.permit(:time, :based_on_last_post, :category_id)
     params.require(:status_type)
 
     status_type =
@@ -302,7 +302,6 @@ class TopicsController < ApplicationController
 
     options = {
       by_user: current_user,
-      timezone_offset: params[:timezone_offset]&.to_i,
       based_on_last_post: params[:based_on_last_post]
     }
 
diff --git a/app/models/topic.rb b/app/models/topic.rb
index 8d4fd350dfb..4293b629cf7 100644
--- a/app/models/topic.rb
+++ b/app/models/topic.rb
@@ -1032,10 +1032,9 @@ SQL
   #  * `nil` to delete the topic's status update.
   # Options:
   #  * by_user: User who is setting the topic's status update.
-  #  * timezone_offset: (Integer) offset from UTC in minutes of the given argument.
   #  * based_on_last_post: True if time should be based on timestamp of the last post.
   #  * category_id: Category that the update will apply to.
-  def set_or_create_timer(status_type, time, by_user: nil, timezone_offset: 0, based_on_last_post: false, category_id: SiteSetting.uncategorized_category_id)
+  def set_or_create_timer(status_type, time, by_user: nil, based_on_last_post: false, category_id: SiteSetting.uncategorized_category_id)
     return delete_topic_timer(status_type, by_user: by_user) if time.blank?
 
     public_topic_timer = !!TopicTimer.public_types[status_type]
@@ -1067,7 +1066,6 @@ SQL
       if is_timestamp && time.include?("-") && timestamp = utc.parse(time)
         # a timestamp in client's time zone, like "2015-5-27 12:00"
         topic_timer.execute_at = timestamp
-        topic_timer.execute_at += timezone_offset * 60 if timezone_offset
         topic_timer.errors.add(:execute_at, :invalid) if timestamp < now
       else
         num_hours = time.to_f
diff --git a/spec/models/topic_spec.rb b/spec/models/topic_spec.rb
index 969f0c52ba9..f0a8bf0f4d4 100644
--- a/spec/models/topic_spec.rb
+++ b/spec/models/topic_spec.rb
@@ -1236,24 +1236,12 @@ describe Topic do
       expect(topic.topic_timers.first.execute_at).to eq(3.days.from_now)
     end
 
-    it 'can take a number of hours as an integer, with timezone offset' do
-      freeze_time now
-      topic.set_or_create_timer(TopicTimer.types[:close], 72, by_user: admin, timezone_offset: 240)
-      expect(topic.topic_timers.first.execute_at).to eq(3.days.from_now)
-    end
-
     it 'can take a number of hours as a string' do
       freeze_time now
       topic.set_or_create_timer(TopicTimer.types[:close], '18', by_user: admin)
       expect(topic.topic_timers.first.execute_at).to eq(18.hours.from_now)
     end
 
-    it 'can take a number of hours as a string, with timezone offset' do
-      freeze_time now
-      topic.set_or_create_timer(TopicTimer.types[:close], '18', by_user: admin, timezone_offset: 240)
-      expect(topic.topic_timers.first.execute_at).to eq(18.hours.from_now)
-    end
-
     it 'can take a number of hours as a string and can handle based on last post' do
       freeze_time now
       topic.set_or_create_timer(TopicTimer.types[:close], '18', by_user: admin, based_on_last_post: true)
@@ -1266,12 +1254,6 @@ describe Topic do
       expect(topic.topic_timers.first.execute_at).to eq(Time.zone.local(2013, 11, 22, 5, 0))
     end
 
-    it "can take a timestamp for a future time, with timezone offset" do
-      freeze_time now
-      topic.set_or_create_timer(TopicTimer.types[:close], '2013-11-22 5:00', by_user: admin, timezone_offset: 240)
-      expect(topic.topic_timers.first.execute_at).to eq(Time.zone.local(2013, 11, 22, 9, 0))
-    end
-
     it "sets a validation error when given a timestamp in the past" do
       freeze_time now
       topic.set_or_create_timer(TopicTimer.types[:close], '2013-11-19 5:00', by_user: admin)