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>> 

        # Date.>>

(from ruby core)
---
    d >> n  ->  date

---

Returns a date object pointing `n` months after self. The argument `n`
should be a numeric value.

    Date.new(2001,2,3)  >>  1   #=> #<Date: 2001-03-03 ...>
    Date.new(2001,2,3)  >> -2   #=> #<Date: 2000-12-03 ...>

When the same day does not exist for the corresponding month, the last
day of the month is used instead:

    Date.new(2001,1,28) >> 1   #=> #<Date: 2001-02-28 ...>
    Date.new(2001,1,31) >> 1   #=> #<Date: 2001-02-28 ...>

This also results in the following, possibly unexpected, behavior:

    Date.new(2001,1,31) >> 2         #=> #<Date: 2001-03-31 ...>
    Date.new(2001,1,31) >> 1 >> 1    #=> #<Date: 2001-03-28 ...>

    Date.new(2001,1,31) >> 1 >> -1   #=> #<Date: 2001-01-28 ...>

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