Time difference between Portland and Shanghai
16 hours
Shanghai is 16 hours ahead of Portland.
Does daylight saving change it?
Yes. In winter the gap is 16 hours; in summer it is 15 hours. Only Portland observes daylight saving.
Overlapping work hours
Between 17:00 and 18:00 in Portland, Shanghai is also at work — 1 hours a day.
Portland time → Shanghai time
| 00:00 | 16:00 |
|---|---|
| 01:00 | 17:00 |
| 02:00 | 18:00 |
| 03:00 | 19:00 |
| 04:00 | 20:00 |
| 05:00 | 21:00 |
| 06:00 | 22:00 |
| 07:00 | 23:00 |
| 08:00 | 00:00next day |
| 09:00 | 01:00next day |
| 10:00 | 02:00next day |
| 11:00 | 03:00next day |
| 12:00 | 04:00next day |
| 13:00 | 05:00next day |
| 14:00 | 06:00next day |
| 15:00 | 07:00next day |
| 16:00 | 08:00next day |
| 17:00 | 09:00next day |
| 18:00 | 10:00next day |
| 19:00 | 11:00next day |
| 20:00 | 12:00next day |
| 21:00 | 13:00next day |
| 22:00 | 14:00next day |
| 23:00 | 15:00next day |
Standard time (January). During daylight saving each row shifts by an hour.
Frequently asked questions
Q. How many hours is Portland ahead of Shanghai?
16 hours on standard time. During daylight saving it becomes 15 hours, an hour more or less.
Q. What time is it in Shanghai when it is noon in Portland?
Read the 12:00 row of the 24-hour table below. The table is on standard time, so each row shifts an hour during daylight saving.
Q. When should we schedule a meeting?
The two cities' work hours (09:00–18:00) overlap for 1 hours a day. Anything inside that window catches both sides at work.