Convert any DateTime to the timezone you prefer while still keeping the same date and time - Ruby on Rails

date_in_preferred_time_zone.rb

def date_in_danish_time(date_time)
  date_array =
    date_time.strftime("%Y %m %d").split.map { |string| Integer(string, 0) }
  danish_date = Date.new(*date_array).in_time_zone("Copenhagen")
  # extracting offset from the date will help us in also taking care of Daylight Saving
  danish_date_offset = danish_date.formatted_offset

  date_time_array =
    date_time
      .strftime("%Y %m %d %H %M %S")
      .split
      .map { |string| Integer(string, 0) }

  DateTime.new(*date_time_array, danish_date_offset)
end