Faced with the prospect of a cable television blackout in the four major metros, the government has postponed the deadline for a switchover from the analogue system to digital system to November 1. With just 10 days left to meet the original deadline of July 1, the Centre has come to terms with the fact that over 90 lakh of the estimated 1.23 crore cable subscribers in the metros have not yet installed set top boxes that are required for digitalisation.