diff --git a/app/logical/upload_limit.rb b/app/logical/upload_limit.rb
index a99e64eaf..e001e7512 100644
--- a/app/logical/upload_limit.rb
+++ b/app/logical/upload_limit.rb
@@ -38,7 +38,7 @@ class UploadLimit
   def used_upload_slots
     pending_count = user.posts.pending.count
     appealed_count = user.post_appeals.pending.count
-    early_deleted_count = user.posts.deleted.where("created_at >= ?", 3.days.ago).count
+    early_deleted_count = user.posts.deleted.where("created_at >= ?", Danbooru.config.moderation_period.ago).count
 
     pending_count + early_deleted_count + (appealed_count * APPEAL_COST)
   end
diff --git a/app/models/post.rb b/app/models/post.rb
index 9b385dbed..c76d9857d 100644
--- a/app/models/post.rb
+++ b/app/models/post.rb
@@ -65,7 +65,7 @@ class Post < ApplicationRecord
   scope :active, -> { where(is_pending: false, is_deleted: false, is_flagged: false).where.not(id: PostAppeal.pending) }
   scope :appealed, -> { where(id: PostAppeal.pending.select(:post_id)) }
   scope :in_modqueue, -> { pending.or(flagged).or(appealed) }
-  scope :expired, -> { where("posts.created_at < ?", 3.days.ago) }
+  scope :expired, -> { pending.where("posts.created_at < ?", Danbooru.config.moderation_period.ago) }
 
   scope :unflagged, -> { where(is_flagged: false) }
   scope :has_notes, -> { where.not(last_noted_at: nil) }
diff --git a/app/models/post_appeal.rb b/app/models/post_appeal.rb
index 65536f478..289e5edea 100644
--- a/app/models/post_appeal.rb
+++ b/app/models/post_appeal.rb
@@ -13,8 +13,7 @@ class PostAppeal < ApplicationRecord
     rejected: 2
   }
 
-  scope :recent, -> { where("post_appeals.created_at >= ?", 1.day.ago) }
-  scope :expired, -> { pending.where("post_appeals.created_at <= ?", 3.days.ago) }
+  scope :expired, -> { pending.where("post_appeals.created_at < ?", Danbooru.config.moderation_period.ago) }
 
   module SearchMethods
     def search(params)
diff --git a/app/models/post_flag.rb b/app/models/post_flag.rb
index ccc02d1f5..f5355e3e9 100644
--- a/app/models/post_flag.rb
+++ b/app/models/post_flag.rb
@@ -6,8 +6,6 @@ class PostFlag < ApplicationRecord
     REJECTED = "Unapproved in three days after returning to moderation queue%"
   end
 
-  COOLDOWN_PERIOD = 3.days
-
   belongs_to :creator, class_name: "User"
   belongs_to :post
   validates :reason, presence: true, length: { in: 1..140 }
@@ -25,8 +23,8 @@ class PostFlag < ApplicationRecord
 
   scope :by_users, -> { where.not(creator: User.system) }
   scope :by_system, -> { where(creator: User.system) }
-  scope :in_cooldown, -> { by_users.where("created_at >= ?", COOLDOWN_PERIOD.ago) }
-  scope :expired, -> { pending.where("post_flags.created_at <= ?", 3.days.ago) }
+  scope :in_cooldown, -> { by_users.where("created_at >= ?", Danbooru.config.moderation_period.ago) }
+  scope :expired, -> { pending.where("post_flags.created_at < ?", Danbooru.config.moderation_period.ago) }
 
   module SearchMethods
     def creator_matches(creator, searcher)
@@ -106,7 +104,7 @@ class PostFlag < ApplicationRecord
 
     flag = post.flags.in_cooldown.last
     if !is_deletion && flag.present?
-      errors[:post] << "cannot be flagged more than once every #{COOLDOWN_PERIOD.inspect} (last flagged: #{flag.created_at.to_s(:long)})"
+      errors[:post] << "cannot be flagged more than once every #{Danbooru.config.moderation_period.inspect} (last flagged: #{flag.created_at.to_s(:long)})"
     end
   end
 
diff --git a/app/views/post_disapprovals/_compact_counts.html.erb b/app/views/post_disapprovals/_compact_counts.html.erb
index 87b5296a8..191e8a994 100644
--- a/app/views/post_disapprovals/_compact_counts.html.erb
+++ b/app/views/post_disapprovals/_compact_counts.html.erb
@@ -1,4 +1,4 @@
-<% if (CurrentUser.can_approve_posts? || post.created_at < 3.days.ago) && disapprovals.length > 0 %>
+<% if (CurrentUser.can_approve_posts? || post.created_at < Danbooru.config.moderation_period.ago) && disapprovals.length > 0 %>
   <% if disapprovals.map(&:reason).grep("breaks_rules").count > 0 %>
     (breaks rules: <%= disapprovals.map(&:reason).grep("breaks_rules").count %>)
   <% end %>
diff --git a/app/views/post_disapprovals/_counts.html.erb b/app/views/post_disapprovals/_counts.html.erb
index 8aac0f717..3ff85c1a1 100644
--- a/app/views/post_disapprovals/_counts.html.erb
+++ b/app/views/post_disapprovals/_counts.html.erb
@@ -1,4 +1,4 @@
-<% if (CurrentUser.can_approve_posts? || post.created_at < 3.days.ago) && disapprovals.length > 0 %>
+<% if (CurrentUser.can_approve_posts? || post.created_at < Danbooru.config.moderation_period.ago) && disapprovals.length > 0 %>
   <p>
     It has been reviewed by <%= pluralize disapprovals.length, "approver" %>. 
 
diff --git a/config/danbooru_default_config.rb b/config/danbooru_default_config.rb
index 9178f6312..d3bb52982 100644
--- a/config/danbooru_default_config.rb
+++ b/config/danbooru_default_config.rb
@@ -110,6 +110,11 @@ module Danbooru
       40000
     end
 
+    # How long pending posts stay in the modqueue before being deleted.
+    def moderation_period
+      3.days
+    end
+
     # https://guides.rubyonrails.org/action_mailer_basics.html#action-mailer-configuration
     # https://guides.rubyonrails.org/configuring.html#configuring-action-mailer
     def mail_delivery_method
diff --git a/test/unit/post_flag_test.rb b/test/unit/post_flag_test.rb
index f9a167ec1..b90d83211 100644
--- a/test/unit/post_flag_test.rb
+++ b/test/unit/post_flag_test.rb
@@ -71,13 +71,13 @@ class PostFlagTest < ActiveSupport::TestCase
         @flag1 = create(:post_flag, post: @post, creator: @users.first)
         as(@mod) { @post.approve! }
 
-        travel_to(PostFlag::COOLDOWN_PERIOD.from_now - 1.minute) do
+        travel_to(Danbooru.config.moderation_period.from_now - 1.minute) do
           @flag2 = build(:post_flag, post: @post, reason: "something", creator: @users.second)
           assert_equal(false, @flag2.valid?)
           assert_match(/cannot be flagged more than once/, @flag2.errors[:post].join)
         end
 
-        travel_to(PostFlag::COOLDOWN_PERIOD.from_now + 1.minute) do
+        travel_to(Danbooru.config.moderation_period.from_now + 1.minute) do
           @flag3 = create(:post_flag, post: @post, reason: "something", creator: @users.second)
           assert(@flag3.errors.empty?)
         end