Time difference in hours

Try Time Difference gem for Ruby at https://rubygems.org/gems/time_difference

start_time = Time.new(2013,1)
end_time = Time.new(2014,1)
TimeDifference.between(start_time, end_time).in_years

this works great, example for number of hours since user created account

(Time.parse(DateTime.now.to_s) - Time.parse(current_user.created_at.to_s))/3600

((date_2 - date_1) / 3600).round

((date_2 - date_1) / 1.hour).round

You can use a gem called time_diff to get the time difference in very useful formats

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