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Editorial Team
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Asked: 2026-05-15T00:35:03+00:00

I have 2 date ranges, start_date1..end_date1 and start_date2..end_date2 , is there an easy ruby

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I have 2 date ranges, start_date1..end_date1 and start_date2..end_date2, is there an easy “ruby” way to find all the dates that are in both ranges?

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  1. Editorial Team

    You can use

    (start_date1..end_date1).to_set & (start_date2..end_date2).to_set

    here’s a fully worked example:

    require 'date'
require 'set'
((Date.today - 3)..(Date.today + 2)).to_set & (Date.today..(Date.today + 5)).to_set

    if you’re counting characters, you can also just do

    (start_date1..end_date1).to_set & start_date2..end_date2

    but I think the original version is clearer.

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