Why does two charts of the same timeframe look different on the same platform?

[nithin]

Why does two charts of the same timeframe look different on the same platform?

I use Zerodha Pi. I have seen this happen a few times, I am looking at a live chart, say 1 min Nifty dec future chart. I open another chart from the marketwatch for the same 1 min timeframe of Nifty dec future, both the charts don’t seem to match exactly. There is usually a small difference, why is this?