1 files changed, 28 insertions, 0 deletions
diff --git a/activesupport/lib/active_support/locale/en.rb b/activesupport/lib/active_support/locale/en.rb
new file mode 100644
index 0000000000..26c2280c95
--- /dev/null
+++ b/activesupport/lib/active_support/locale/en.rb
@@ -0,0 +1,28 @@
+# frozen_string_literal: true
+
+{
+  en: {
+    number: {
+      nth: {
+        ordinals: lambda do |_key, number:, **_options|
+          abs_number = number.to_i.abs
+
+          if (11..13).cover?(abs_number % 100)
+            "th"
+          else
+            case abs_number % 10
+            when 1 then "st"
+            when 2 then "nd"
+            when 3 then "rd"
+            else "th"
+            end
+          end
+        end,
+
+        ordinalized: lambda do |_key, number:, **_options|
+          "#{number}#{ActiveSupport::Inflector.ordinal(number)}"
+        end
+      }
+    }
+  }
+}