Why bars are different with different platforms

[ShubhS9]

This post explains the reason behind this in detail:

Why does the same technical charts for the same stock from NSE Tame, Google finance, Yahoo finance, Amibroker, not match?

I was looking at the 5 minute chart of Reliance, on NEST Plus, I then compared that chart with google finance, yahoo finance, amibroker, and realized that none of them match exactly with each other. Can someone explain me how? Which one is correct?