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localtime 

        # Time.localtime

(from ruby core)
---
    time.localtime -> time
    time.localtime(utc_offset) -> time

---

Converts *time* to local time (using the local time zone in effect at
the creation time of *time*) modifying the receiver.

If `utc_offset` is given, it is used instead of the local time.

    t = Time.utc(2000, "jan", 1, 20, 15, 1) #=> 2000-01-01 20:15:01 UTC
    t.utc?                                  #=> true

    t.localtime                             #=> 2000-01-01 14:15:01 -0600
    t.utc?                                  #=> false

    t.localtime("+09:00")                   #=> 2000-01-02 05:15:01 +0900
    t.utc?                                  #=> false

If `utc_offset` is not given and *time* is local time, just returns the
receiver.

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