GDI...typo.

app/helpers/events_helper.rb

@@ -177,7 +177,8 @@ module EventsHelper
     return unless event.url.present? && current_user
 
     conference = event.conference
-    is_today = event.time&.in_time_zone(c.timezone).to_date == conference.current_conference_day
+    is_today = event.time&.in_time_zone(conference.timezone).to_date
+      == conference.current_conference_day
 
     if current_user.roles.where(id: conference.roles).any?
       # Show Pre-Event links for any memeber of the conference team.

app/models/event_schedule.rb

@@ -27,6 +27,15 @@ class EventSchedule < ApplicationRecord
 
   delegate :guid, to: :room, prefix: true
 
+  delegate :timezone, to: event
+
+  ##
+  # True within 1 hour before and after the event.
+  #
+  def happening_now?(threshold=1.hour)
+    false
+  end
+
   def self.withdrawn_or_canceled_event_schedules(schedule_ids)
     EventSchedule
       .unscoped