use Date.current instead of Date.today as it is timezone aware

app/models/download.rb

@@ -42,13 +42,13 @@ def self.most_downloaded_today
   end
 
   def self.counts_by_day_for_versions(versions, days)
-    dates = (days.days.ago.to_date...Date.today).map &:to_s
+    dates = (days.days.ago.to_date...Date.current).map &:to_s
 
     versions.inject({}) do |downloads, version|
       $redis.hmget(self.history_key(version), *dates).each_with_index do |count, idx|
         downloads["#{version.id}-#{dates[idx]}"] = count.to_i
       end
-      downloads["#{version.id}-#{Date.today}"] = self.today(version)
+      downloads["#{version.id}-#{Date.current}"] = self.today(version)
       downloads
     end
   end

lib/tasks/downloads.rake

@@ -33,7 +33,7 @@ namespace "gemcutter:downloads" do
 
     puts "*" * 80
 
-    Dl.created_at_inside(Date.today.to_datetime, Date.today.to_datetime + 1.day).group_by(&:version_id).each do |version_id, downloads|
+    Dl.created_at_inside(Date.current.to_datetime, Date.current.to_datetime + 1.day).group_by(&:version_id).each do |version_id, downloads|
       name  = vmap[version_id].full_name
       count = downloads.size
       puts ">>> #{name}: #{count}"

test/unit/download_test.rb

@@ -119,9 +119,9 @@ class DownloadTest < ActiveSupport::TestCase
     Download.incr(@rubygem_1, @version_2.full_name)
 
     downloads = {
-      "#{@version_1.id}-#{2.days.ago.to_date}" => 0, "#{@version_1.id}-#{Date.yesterday}" => 1, "#{@version_1.id}-#{Date.today}" => 1,
-      "#{@version_2.id}-#{2.days.ago.to_date}" => 0, "#{@version_2.id}-#{Date.yesterday}" => 1, "#{@version_2.id}-#{Date.today}" => 1,
-      "#{@version_3.id}-#{2.days.ago.to_date}" => 0, "#{@version_3.id}-#{Date.yesterday}" => 1, "#{@version_3.id}-#{Date.today}" => 3 }
+      "#{@version_1.id}-#{2.days.ago.to_date}" => 0, "#{@version_1.id}-#{Date.yesterday}" => 1, "#{@version_1.id}-#{Date.current}" => 1,
+      "#{@version_2.id}-#{2.days.ago.to_date}" => 0, "#{@version_2.id}-#{Date.yesterday}" => 1, "#{@version_2.id}-#{Date.current}" => 1,
+      "#{@version_3.id}-#{2.days.ago.to_date}" => 0, "#{@version_3.id}-#{Date.yesterday}" => 1, "#{@version_3.id}-#{Date.current}" => 3 }
 
     assert_equal downloads, Download.counts_by_day_for_versions([@version_1, @version_2, @version_3], 2)
   end