Back to work after a long weekend, people in Delhi-NCR ran out of their offices this afternoon as two earthquakes hit the national capital back to back. The epicentre of the first quake was in Afghanistan and the second in Nepal. The first hit around 2.28 pm and was its intensity was 4.6 on the Richter scale. The second hit at 2.51 pm. This one ranked higher on the intensity scale, about 6.2.