Philadelphia is 11 hours behind Ho Chi Minh City

There is no standard 8-to-6 overlap. Someone joins early or late.

Ho Chi Minh City and Philadelphia sit on opposite ends of the clock — an 11-hour gap leaves no common business hours to work with. Lean on recorded updates, shared docs, and clear handoffs so the 11-hour gap doesn't stall progress between meetings. Note the seasonal wrinkle: when Philadelphia is on daylight saving and Ho Chi Minh City isn't, the gap between them grows or shrinks by an hour.