Original: He was twice elected as Prime Minister of Pakistan , serving two non-consecutive terms , the first from November 1 , 1990 to July 18 , 1993 and the second from February 17 , 1997 to October 12 , 1999 .
Simplified: His first time as prime minister was from November 1 , 1990 to July 18 , 1993 . The second was from February 17 , 1997 to October 12 , 1999 .