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Asked: 2026-06-17T06:24:41+00:00

Given are two timestamps in the format YYYYMMDDHH , which are perfectly parseable by

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Given are two timestamps in the format YYYYMMDDHH, which are perfectly parseable by DateTime.strptime.

What I want to create is a list of strings in the given format from above in one hour steps, starting from the first date up to the second date.

Example input: 2013011515 and 2013011822.

Expected output: ['2013011515','2013011516','2013011517','2013011518', ... , '2013011820', '2013011820', '2013011821', '2013011822']

Is there any ruby library or core functionality to accomplish this task?

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1 Answer

  1. Editorial Team

    You can use step with an hourly resolution if you use ruby 1.9:

    date1 = DateTime.strptime('2013011522', '%Y%m%d%H')
date2 = DateTime.strptime('2013011622', '%Y%m%d%H')

date_range = date1.step(date2, 1.0/24).to_a

    Alternatively, on ruby 1.8.7, use a loop

    date1 = DateTime.strptime('2013011522', '%Y%m%d%H')
date2 = DateTime.strptime('2013011622', '%Y%m%d%H')

new_date = date1
date_range = [date1]
date_range << (new_date += 1.0/24) while new_date <= date2
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