diff --git a/app/lib/admin/metrics/measure/active_users_measure.rb b/app/lib/admin/metrics/measure/active_users_measure.rb
index e6f09d4bcf629..c085ced6291ac 100644
--- a/app/lib/admin/metrics/measure/active_users_measure.rb
+++ b/app/lib/admin/metrics/measure/active_users_measure.rb
@@ -22,12 +22,4 @@ class Admin::Metrics::Measure::ActiveUsersMeasure < Admin::Metrics::Measure::Bas
   def activity_tracker
     @activity_tracker ||= ActivityTracker.new('activity:logins', :unique)
   end
-
-  def time_period
-    (@start_at.to_date..@end_at.to_date)
-  end
-
-  def previous_time_period
-    ((@start_at.to_date - length_of_period)..(@end_at.to_date - length_of_period))
-  end
 end
diff --git a/app/lib/admin/metrics/measure/base_measure.rb b/app/lib/admin/metrics/measure/base_measure.rb
index e33a6c494f918..8b7fe39b55a24 100644
--- a/app/lib/admin/metrics/measure/base_measure.rb
+++ b/app/lib/admin/metrics/measure/base_measure.rb
@@ -86,11 +86,11 @@ class Admin::Metrics::Measure::BaseMeasure
   end
 
   def time_period
-    (@start_at..@end_at)
+    (@start_at.to_date..@end_at.to_date)
   end
 
   def previous_time_period
-    ((@start_at - length_of_period)..(@end_at - length_of_period))
+    ((@start_at.to_date - length_of_period)..(@end_at.to_date - length_of_period))
   end
 
   def length_of_period
diff --git a/app/lib/admin/metrics/measure/instance_accounts_measure.rb b/app/lib/admin/metrics/measure/instance_accounts_measure.rb
index 746780ee7719e..889a5e6f05f29 100644
--- a/app/lib/admin/metrics/measure/instance_accounts_measure.rb
+++ b/app/lib/admin/metrics/measure/instance_accounts_measure.rb
@@ -48,14 +48,6 @@ class Admin::Metrics::Measure::InstanceAccountsMeasure < Admin::Metrics::Measure
     SQL
   end
 
-  def time_period
-    (@start_at.to_date..@end_at.to_date)
-  end
-
-  def previous_time_period
-    ((@start_at.to_date - length_of_period)..(@end_at.to_date - length_of_period))
-  end
-
   def params
     @params.permit(:domain, :include_subdomains)
   end
diff --git a/app/lib/admin/metrics/measure/instance_followers_measure.rb b/app/lib/admin/metrics/measure/instance_followers_measure.rb
index 0693d5a64a91d..fa934c6b96c58 100644
--- a/app/lib/admin/metrics/measure/instance_followers_measure.rb
+++ b/app/lib/admin/metrics/measure/instance_followers_measure.rb
@@ -49,14 +49,6 @@ class Admin::Metrics::Measure::InstanceFollowersMeasure < Admin::Metrics::Measur
     SQL
   end
 
-  def time_period
-    (@start_at.to_date..@end_at.to_date)
-  end
-
-  def previous_time_period
-    ((@start_at.to_date - length_of_period)..(@end_at.to_date - length_of_period))
-  end
-
   def params
     @params.permit(:domain, :include_subdomains)
   end
diff --git a/app/lib/admin/metrics/measure/instance_follows_measure.rb b/app/lib/admin/metrics/measure/instance_follows_measure.rb
index 90d38193585c8..3f3ab73fc90a2 100644
--- a/app/lib/admin/metrics/measure/instance_follows_measure.rb
+++ b/app/lib/admin/metrics/measure/instance_follows_measure.rb
@@ -49,14 +49,6 @@ class Admin::Metrics::Measure::InstanceFollowsMeasure < Admin::Metrics::Measure:
     SQL
   end
 
-  def time_period
-    (@start_at.to_date..@end_at.to_date)
-  end
-
-  def previous_time_period
-    ((@start_at.to_date - length_of_period)..(@end_at.to_date - length_of_period))
-  end
-
   def params
     @params.permit(:domain, :include_subdomains)
   end
diff --git a/app/lib/admin/metrics/measure/instance_media_attachments_measure.rb b/app/lib/admin/metrics/measure/instance_media_attachments_measure.rb
index 89f8b414973b8..996ca52e0bb5b 100644
--- a/app/lib/admin/metrics/measure/instance_media_attachments_measure.rb
+++ b/app/lib/admin/metrics/measure/instance_media_attachments_measure.rb
@@ -58,14 +58,6 @@ class Admin::Metrics::Measure::InstanceMediaAttachmentsMeasure < Admin::Metrics:
     SQL
   end
 
-  def time_period
-    (@start_at.to_date..@end_at.to_date)
-  end
-
-  def previous_time_period
-    ((@start_at.to_date - length_of_period)..(@end_at.to_date - length_of_period))
-  end
-
   def params
     @params.permit(:domain, :include_subdomains)
   end
diff --git a/app/lib/admin/metrics/measure/instance_reports_measure.rb b/app/lib/admin/metrics/measure/instance_reports_measure.rb
index 5f58387a640ae..ae1bb6e68de8d 100644
--- a/app/lib/admin/metrics/measure/instance_reports_measure.rb
+++ b/app/lib/admin/metrics/measure/instance_reports_measure.rb
@@ -49,14 +49,6 @@ class Admin::Metrics::Measure::InstanceReportsMeasure < Admin::Metrics::Measure:
     SQL
   end
 
-  def time_period
-    (@start_at.to_date..@end_at.to_date)
-  end
-
-  def previous_time_period
-    ((@start_at.to_date - length_of_period)..(@end_at.to_date - length_of_period))
-  end
-
   def params
     @params.permit(:domain, :include_subdomains)
   end
diff --git a/app/lib/admin/metrics/measure/instance_statuses_measure.rb b/app/lib/admin/metrics/measure/instance_statuses_measure.rb
index 5873c6e71fcee..324d427b18bed 100644
--- a/app/lib/admin/metrics/measure/instance_statuses_measure.rb
+++ b/app/lib/admin/metrics/measure/instance_statuses_measure.rb
@@ -58,14 +58,6 @@ class Admin::Metrics::Measure::InstanceStatusesMeasure < Admin::Metrics::Measure
     Mastodon::Snowflake.id_at(@end_at.end_of_day, with_random: false)
   end
 
-  def time_period
-    (@start_at.to_date..@end_at.to_date)
-  end
-
-  def previous_time_period
-    ((@start_at.to_date - length_of_period)..(@end_at.to_date - length_of_period))
-  end
-
   def params
     @params.permit(:domain, :include_subdomains)
   end
diff --git a/app/lib/admin/metrics/measure/interactions_measure.rb b/app/lib/admin/metrics/measure/interactions_measure.rb
index 7a2b7e0fac48f..f4b4836b4a827 100644
--- a/app/lib/admin/metrics/measure/interactions_measure.rb
+++ b/app/lib/admin/metrics/measure/interactions_measure.rb
@@ -22,12 +22,4 @@ class Admin::Metrics::Measure::InteractionsMeasure < Admin::Metrics::Measure::Ba
   def activity_tracker
     @activity_tracker ||= ActivityTracker.new('activity:interactions', :basic)
   end
-
-  def time_period
-    (@start_at.to_date..@end_at.to_date)
-  end
-
-  def previous_time_period
-    ((@start_at.to_date - length_of_period)..(@end_at.to_date - length_of_period))
-  end
 end
diff --git a/app/lib/admin/metrics/measure/tag_accounts_measure.rb b/app/lib/admin/metrics/measure/tag_accounts_measure.rb
index 8f4512efe7cdd..906277b7d543f 100644
--- a/app/lib/admin/metrics/measure/tag_accounts_measure.rb
+++ b/app/lib/admin/metrics/measure/tag_accounts_measure.rb
@@ -27,14 +27,6 @@ class Admin::Metrics::Measure::TagAccountsMeasure < Admin::Metrics::Measure::Bas
     @tag ||= Tag.find(params[:id])
   end
 
-  def time_period
-    (@start_at.to_date..@end_at.to_date)
-  end
-
-  def previous_time_period
-    ((@start_at.to_date - length_of_period)..(@end_at.to_date - length_of_period))
-  end
-
   def params
     @params.permit(:id)
   end
diff --git a/app/lib/admin/metrics/measure/tag_uses_measure.rb b/app/lib/admin/metrics/measure/tag_uses_measure.rb
index bce86b89f1088..2be96a02b3777 100644
--- a/app/lib/admin/metrics/measure/tag_uses_measure.rb
+++ b/app/lib/admin/metrics/measure/tag_uses_measure.rb
@@ -27,14 +27,6 @@ class Admin::Metrics::Measure::TagUsesMeasure < Admin::Metrics::Measure::BaseMea
     @tag ||= Tag.find(params[:id])
   end
 
-  def time_period
-    (@start_at.to_date..@end_at.to_date)
-  end
-
-  def previous_time_period
-    ((@start_at.to_date - length_of_period)..(@end_at.to_date - length_of_period))
-  end
-
   def params
     @params.permit(:id)
   end