A Sunday Mega Block is set for Sunday, February 1, on Central, Harbour, and Western lines. Central's block hits Thane-Kalyan (10:40 AM-3:40 PM), while Harbour services are suspended between Kurla-Vashi (11:10 AM-4:10 PM). Western Railway has a Jumbo Block between Churchgate and Mumbai Central. Trans-Harbour and Uran lines remain unaffected.