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From: Thomas 'PointedEars' Lahn <PointedEars@web.de>
Newsgroups: comp.lang.javascript
Subject: Measuring time (was: Random numbers)
Date: Thu, 19 Oct 2017 22:58:20 +0200
Organization: PointedEars Software (PES)
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Michael Haufe (TNO) wrote:

> Thomas 'PointedEars' Lahn wrote:
>> Thanks, but if you read more carefully: Although it *can* be accurate to
>> *5* microseconds *if the device supports it* ? it is only *guaranteed* to
>> be accurate to milliseconds ?, it does _not_ provide the *time from
>> epoch* (or anything like that) in microseconds then, and therefore makes
>> for a *worse* PRNG seed value than new Date().getTime().
> 
> More of an FYI of its existence to move the needle away from "That is not
> possible"

ACK.

Apropos, it had just occurred to me (when reading that the first time the 
on-board cesium clocks of the GPS NTS-2 satellite were tested was on “day 
190, 1977”) that you can obtain the date for day N of year Y using

  new Date(Y, 0, N)

-- 
PointedEars
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