1 files changed, 31 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..a2a7ea7ae1
--- /dev/null
+++ b/activesupport/lib/active_support/locale/en.rb
@@ -0,0 +1,31 @@
+# frozen_string_literal: true
+
+{
+  en: {
+    number: {
+      nth: {
+        ordinals: lambda do |_key, number:, **_options|
+          case number
+          when 1; "st"
+          when 2; "nd"
+          when 3; "rd"
+          when 4, 5, 6, 7, 8, 9, 10, 11, 12, 13; "th"
+          else
+            num_modulo = number.to_i.abs % 100
+            num_modulo %= 10 if num_modulo > 13
+            case num_modulo
+            when 1; "st"
+            when 2; "nd"
+            when 3; "rd"
+            else    "th"
+            end
+          end
+        end,
+
+        ordinalized: lambda do |_key, number:, **_options|
+          "#{number}#{ActiveSupport::Inflector.ordinal(number)}"
+        end
+      }
+    }
+  }
+}