diff --git a/web/lib/potato_mesh/config.rb b/web/lib/potato_mesh/config.rb
index f4a1a30..f6ab209 100644
--- a/web/lib/potato_mesh/config.rb
+++ b/web/lib/potato_mesh/config.rb
@@ -133,8 +133,10 @@ module PotatoMesh
       ["potatomesh.net"].freeze
     end
 
+    # @return [Integer] the number of seconds between federation announcement broadcasts.
+    #   Eight hours provides three updates per day without creating unnecessary chatter.
     def federation_announcement_interval
-      24 * 60 * 60
+      8 * 60 * 60
     end
 
     def site_name
diff --git a/web/spec/config_spec.rb b/web/spec/config_spec.rb
new file mode 100644
index 0000000..73b5620
--- /dev/null
+++ b/web/spec/config_spec.rb
@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+require "spec_helper"
+
+RSpec.describe PotatoMesh::Config do
+  describe ".federation_announcement_interval" do
+    it "returns eight hours in seconds" do
+      expect(described_class.federation_announcement_interval).to eq(8 * 60 * 60)
+    end
+  end
+end