Question

Working on a 3 week new registration chart for metrics, I have the following code:

(3.weeks.ago.to_date..Date.today).map { |date| Metrics.registrations_on(date) }

In Metrics.rb:

def self.registrations_on(date)
  date = date.midnight
  end_date = date + 24.hours
  User.where(:created_at => date..end_date).count
end

Before the day is done here in California, a new day’s numbers are already starting to increase. The created_at timestamp is UTC as well.

I’d like to be able to see the stats from today, using our time zone. With my data already saved as UTC I’m curious as to how about accomplishing this.

Answer 1

Open config/application.rb, find config.time_zone, and assign it with appropriate value:

config.time_zone = 'Pacific Time (US & Canada)'

Restart your app, and all ruby date/time operation should be adjusted automatically to your time zone.

For a list of all supported time zone strings, use:

bundle exec rake time:zones:all