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ruby - Parse ticks to datetime

How can I convert a tick, such as 1298011537289 to a DateTime in Ruby?

The value I need to convert is coming from a JavaScript Date.now() call, so it's in milliseconds

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Per the Ruby docs:

myTime = Time.at(1298011537289)

or since you're using milliseconds rather than seconds:

myTime = Time.at(1298011537289 / 1000)

But that will only remove sub-second precision, to retain it:

myTime = Time.at(Rational(1298011537289, 1000))

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