There is no overlap between 09:00–18:00 working days in these two places.
Clock changes in Boston and Karachi
Boston
Eastern Daylight Time (EDT)
Next clock change Sun 1 Nov 2026 (UTC−4 → UTC−5)
Karachi
Pakistan Standard Time (PKT)
No daylight saving time.
Time difference between Boston and Karachi today
Today Karachi is 9 hours ahead of Boston. When it is 09:00 in Boston, it is 18:00 in Karachi. Boston is on Eastern Daylight Time (EDT); Karachi is on Pakistan Standard Time (PKT).
When the Boston to Karachi time difference changes
For most of the year Karachi is 9 hours ahead of Boston. From 1 November to 31 December 2026, Karachi is 10 hours ahead of Boston instead, because the two places change their clocks on different dates. Meetings booked by the usual gap land an hour off in those weeks.
Dates
Karachi vs Boston
Length
8 March 2026 to 31 October 2026
9 hours ahead
238 days
1 November 2026 to 31 December 2026
10 hours ahead
61 days
1 January 2027 to 13 March 2027
10 hours ahead
72 days
14 March 2027 to 6 November 2027
9 hours ahead
238 days
7 November 2027 to 31 December 2027
10 hours ahead
55 days
When Boston and Karachi are both at work
When Karachi is 9 hours ahead of Boston: no shared 09:00 to 17:00 hours; try 08:00 in Boston (17:00 in Karachi).
When Karachi is 10 hours ahead of Boston: no shared 09:00 to 17:00 hours; try 07:00 in Boston (17:00 in Karachi).
Frequently asked questions about Boston and Karachi time
What time is it in Karachi when it is 9:00 AM in Boston?
18:00 today; Karachi is 9 hours ahead of Boston.
Does the time difference between Boston and Karachi change?
Yes. It is usually 9 hours ahead, but changes when one side moves its clocks: 10 hours ahead from 1 November to 31 December 2026; 10 hours ahead from 1 January to 13 March 2027.