Business Hours Overlap (Time Zones)

Find the working hours two offices in different time zones share, free online.

Office A — UTC offset (hours)

Office A — workday starts (HH:MM)

Office A — workday ends (HH:MM)

Office B — UTC offset (hours)

Office B — workday starts (HH:MM)

Office B — workday ends (HH:MM)

About this calculator

Give each office's UTC offset and working hours. The tool converts both to a common timeline and shows the overlapping window in each office's local time, so you can schedule calls when both teams are at work.