Prime Day Deals For The Home Okay, so here’s the low-down on Amazon Prime day. Amazon Prime Day 2019 will officially begin at 12 a.m. PST (3 a.m. EST) on Monday, July 15th. Prime Day 2019 will last for 48 hours. It ends at 11:59 p.m. PST on Tuesday, July 16th. What exactly is it …