In the picture below you see a comparison of the 2011-2012 rally in Apple (AAPL) to the 2016-2017 rally currently underway.
In 2011 the 10 ema crossed above the 21 sma on December 6, 2011. The rally peaked on April 10, 2012 and the moving averages crossed to the downside on April 17, 2012. The length of the rally from initial upside cross to the downside cross was 91 trading days.
In 2016 the 10 ema crossed above the 21 sma on November 25, 2016. So far the rally is still on after 89 trading days. Today is April 5, 2017. Observing the past, to live in the present, with eyes wide open.