There is no overlap between 09:00–18:00 working days in these two places.
Clock changes in Boston and Shanghai
Boston
Eastern Daylight Time (EDT)
Next clock change Sun 1 Nov 2026 (UTC−4 → UTC−5)
Shanghai
China Standard Time (CST)
No daylight saving time.
Time difference between Boston and Shanghai today
Right now Shanghai is 12 hours ahead of Boston. When it is 09:00 in Boston, it is 21:00 in Shanghai. Boston is on Eastern Daylight Time (EDT); Shanghai is on China Standard Time (CST).
When the Boston to Shanghai time difference changes
For most of the year Shanghai is 12 hours ahead of Boston. From 1 November to 31 December 2026, Shanghai is 13 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
Shanghai vs Boston
Length
8 March 2026 to 31 October 2026
12 hours ahead
238 days
1 November 2026 to 31 December 2026
13 hours ahead
61 days
1 January 2027 to 13 March 2027
13 hours ahead
72 days
14 March 2027 to 6 November 2027
12 hours ahead
238 days
7 November 2027 to 31 December 2027
13 hours ahead
55 days
When Boston and Shanghai are both at work
When Shanghai is 12 hours ahead of Boston: no shared 09:00 to 17:00 hours; try 07:00 in Boston (19:00 in Shanghai).
When Shanghai is 13 hours ahead of Boston: no shared 09:00 to 17:00 hours; try 07:00 in Boston (20:00 in Shanghai).
Frequently asked questions about Boston and Shanghai time
What time is it in Shanghai when it is 9:00 AM in Boston?
21:00 today; Shanghai is 12 hours ahead of Boston.
Does the time difference between Boston and Shanghai change?
Yes. It is usually 12 hours ahead, but changes when one side moves its clocks: 13 hours ahead from 1 November to 31 December 2026; 13 hours ahead from 1 January to 13 March 2027.