Mumbai: Key Indian equity market indices opened in Green on Thursday taking a cue from global markets. The Sensitive Index (Sensex) of the BSE, which had closed at 27,915.89 points on Wednesday, opened higher at 27,980.07. Minutes into trading, it was quoting at 27,935.65 points, up 19.76 points, or 0.07 per cent. At the National Stock Exchange (NSE), the broader 51-scrip Nify, which had closed at 8,565.85 points, was opened at 8,581.95 points. Minutes after it was trading at 8,574 points, up 8.15 points or 0.10 per cent. On Wednesday, the Sensex was up 128.27 points and the Nifty gained 37.30 points mainly due to continued FII inflow and also on the positive expectation of Goods and Services Tax that it will get passed in the current monsoon session. Among Asian markets, most of them climbed at the opening on Thursday while Japanese shares were leading the regional peers.