【ruby】2つのtimeをn分ごとや1時間ごとにeachする

a = Time.parse('2021-01-01 13:00')
b = Time.parse('2021-01-01 18:00')

# NG こんなのあったらいいな 
(a..b).each_hour

require 'time'


a = Time.parse('2021-01-01 13:00')
b = Time.parse('2021-01-01 18:00')


def each_time(start_time, end_time, interval_second)
    current_time = start_time.clone
    ((end_time - start_time) / interval_second).to_i.times {
        yield current_time
        current_time += interval_second
    }
end


p 'each 30min'
each_time(a, b, 1800) {|current_time|
    p current_time.strftime '%H:%M'
}

p 'each 1hour'
each_time(a, b, 3600) {|current_time|
    p current_time.strftime '%H:%M'
}