How to calculate the Pivot Point values?

I saw many formulas and to many values.

One of the reason is the daily candle is different in GMT and in EST timezone.

But it it's a completely different values:



Other is the formula:
http://www.investopedia.com/ask/answ...vot-points.asp
http://www.pivotpointcalculator.com/
http://www.babypips.com/school/middl...ot-points.html
https://en.wikipedia.org/wiki/Pivot_...ical_analysis)

Which is the right one, the "official" one?

The right one should be the one calculated with the same time zone than your platform time.

thanks