scrape sunrise/sunset data

sunset.rb

#!/usr/bin/env ruby -w

require 'faraday'
require 'json'
require 'nokogiri'

def sunsets_from_html(html)
  doc = Nokogiri::HTML(html)
  table = doc.css('table').first
  table.css('br').each { |newline| newline.replace("\n") }
  table.css('tr').inject({}) do |by_day, row|
    unless row.at_css('td').text == 'Monday'
      row.css('td').each do |cell|
        text = cell.text
        # nbsp
        unless text.each_byte.to_a == [194, 160]
          values = text.split(/\n+/)
          day = values.shift.to_i
          values.each { |v| v.sub!(/^[^\d]+/, '') }
          sunrise, morning, sunset, night = *values
          by_day[day] = {
            sunrise: sunrise,
            morning: morning,
            sunset: sunset,
            night: night,
          }
        end
      end
    end
    by_day
  end
end

conn = Faraday.new(url: 'http://www.sunrisesunset.com')
sunsets_by_month = {}
1.upto(12) do |month|
  params = {
    city_name: "Victoria, British Columbia, Canada",
    latitude: "48.4286",
    longitude: "123.3656",
    latitude_n_s: "N",
    longitude_e_w: "W",
    timezone: -8,
    dst_type: 1,
    btop: nil,
    back: "Canada",
    month: month,
    year: 2015,
    want_twi_civ: 1,
    time_type: 1,
    wsom: 1
  }
  response = conn.post('/calendar.asp', params)
  html = response.body
  sunsets_by_month[month] = sunsets_from_html(html)
end
puts JSON.generate(sunsets: sunsets_by_month)