diff --git a/activemodel/lib/active_model/type/helpers/time_value.rb b/activemodel/lib/active_model/type/helpers/time_value.rb
index 508fe77531d..075e906034e 100644
--- a/activemodel/lib/active_model/type/helpers/time_value.rb
+++ b/activemodel/lib/active_model/type/helpers/time_value.rb
@@ -11,10 +11,10 @@ module ActiveModel
           value = apply_seconds_precision(value)
 
           if value.acts_like?(:time)
-            zone_conversion_method = is_utc? ? :getutc : :getlocal
-
-            if value.respond_to?(zone_conversion_method)
-              value = value.send(zone_conversion_method)
+            if is_utc?
+              value = value.getutc if value.respond_to?(:getutc) && !value.utc?
+            else
+              value = value.getlocal if value.respond_to?(:getlocal)
             end
           end
 
diff --git a/activemodel/lib/active_model/type/value.rb b/activemodel/lib/active_model/type/value.rb
index 994d135b7b4..788ded3e96d 100644
--- a/activemodel/lib/active_model/type/value.rb
+++ b/activemodel/lib/active_model/type/value.rb
@@ -110,7 +110,7 @@ module ActiveModel
         [self.class, precision, scale, limit].hash
       end
 
-      def assert_valid_value(*)
+      def assert_valid_value(_)
       end
 
       private
diff --git a/activerecord/lib/active_record/connection_adapters/abstract/quoting.rb b/activerecord/lib/active_record/connection_adapters/abstract/quoting.rb
index 1b6ba8ce97a..93273f6cf6f 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract/quoting.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract/quoting.rb
@@ -114,16 +114,16 @@ module ActiveRecord
       # if the value is a Time responding to usec.
       def quoted_date(value)
         if value.acts_like?(:time)
-          zone_conversion_method = ActiveRecord::Base.default_timezone == :utc ? :getutc : :getlocal
-
-          if value.respond_to?(zone_conversion_method)
-            value = value.send(zone_conversion_method)
+          if ActiveRecord::Base.default_timezone == :utc
+            value = value.getutc if value.respond_to?(:getutc) && !value.utc?
+          else
+            value = value.getlocal if value.respond_to?(:getlocal)
           end
         end
 
         result = value.to_s(:db)
         if value.respond_to?(:usec) && value.usec > 0
-          "#{result}.#{sprintf("%06d", value.usec)}"
+          result << "." << sprintf("%06d", value.usec)
         else
           result
         end