Hi Ranga,
Yes you are right, most of the movement in commodities happens only after 6pm currently (5pm after march when DST changes). This is when traders in US come to their desks and leads to decent moves. Ideally one should trade only in the evening as trading during day time is a net net loss making idea.
I trade equities/fx till 3:30/5pm and after which I trade commodities on MCX. I trade till when MCX closes. Nothing is prop, cause I don't have a secret sauce. I use no indicators. I simply have a screen with 5 min candlestick chart of various products - Eur, GBP, Yen, CHF, AUD, S&P 500, Treasury 10 yr futures, Crude, Copper, Gold, Silver, NG. I just follow and trade with the momentum.
For intraday trading, specially the kind I do, you can make do with MCX charts as momentum should be clearly visible. For deeper analysis, positional/swing trades, Support/resistance levels, breakouts, CME charts are more appropriate. It could be the case that having access to CME gives one a slight advantage, but that's just maybe a half second to 1 second advantage. Prices on MCX reacts very very swiftly to movements on CME. I use CME charts.
For free access to charts for these markets I use MT4 software with feed by GCI or XTB. Go to their site, choose Open Demo account and then register and download MT4. There you have charts with live feed (free) for many many products (including Nifty !!) ...
All fx pairs, Nifty , USD-INR, All commodities, Base metals (feed from LME), Other commodities not traded on MCX etc etc.. pretty good to use..