Offset
The time difference between Shanghai and Porto Alegre is 11 hours.
Shanghai (CST) is ahead of Porto Alegre (BRT).
CST: UTC+8
BRT: UTC-3
Neither Shanghai nor Porto Alegre is currently observing daylight saving time.
When to schedule
Standard business hours (9 AM–5 PM, Mon–Fri) in Shanghai and Porto Alegre don't overlap on the same weekday. Porto Alegre is 11 hours behind Shanghai.
With some flexibility, there’s a workable window outside standard hours:
- 6 PM–8 PM in Shanghai (7 AM–9 AM in Porto Alegre) — suggest 7:00 PM Shanghai (8:00 AM Porto Alegre).
This means an early start or late finish for one side, but it’s a reasonable slot for a one-off meeting.
Public holidays in 2026
National public holidays can affect availability — a counterpart is likely off work on their own holidays, so it's worth planning meetings and deadlines around them.
China
- New Year's DayThu, Jan 1
- Chinese New Year (Spring Festival)Tue, Feb 17
- Labour DayFri, May 1
- Dragon Boat FestivalFri, Jun 19
- Mid-Autumn FestivalFri, Sep 25
- National DayThu, Oct 1
Brazil
- New Year's DayThu, Jan 1
- CarnivalMon, Feb 16
- CarnivalTue, Feb 17
- Good FridayFri, Apr 3
- Easter SundaySun, Apr 5
- TiradentesTue, Apr 21
- Labour DayFri, May 1
- Corpus ChristiThu, Jun 4
- Independence DayMon, Sep 7
- Our Lady of AparecidaMon, Oct 12
- All Souls' DayMon, Nov 2
- Republic Proclamation DaySun, Nov 15
- Black Awareness DayFri, Nov 20
- Christmas DayFri, Dec 25
About these zones
Shanghai uses China Standard Time (CST). To call China, dial +86.
Porto Alegre uses Brasilia Time (BRT). To call Brazil, dial +55.
Porto Alegre is approximately 12,000 miles west of Shanghai.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| Shanghai | Porto Alegre | Day |
|---|---|---|
| 12:00 am | 1:00 pm | -1 day |
| 1:00 am | 2:00 pm | -1 day |
| 2:00 am | 3:00 pm | -1 day |
| 3:00 am | 4:00 pm | -1 day |
| 4:00 am | 5:00 pm | -1 day |
| 5:00 am | 6:00 pm | -1 day |
| 6:00 am | 7:00 pm | -1 day |
| 7:00 am | 8:00 pm | -1 day |
| 8:00 am | 9:00 pm | -1 day |
| 9:00 am | 10:00 pm | -1 day |
| 10:00 am | 11:00 pm | -1 day |
| 11:00 am | 12:00 am | Same day |
| 12:00 pm | 1:00 am | Same day |
| 1:00 pm | 2:00 am | Same day |
| 2:00 pm | 3:00 am | Same day |
| 3:00 pm | 4:00 am | Same day |
| 4:00 pm | 5:00 am | Same day |
| 5:00 pm | 6:00 am | Same day |
| 6:00 pm | 7:00 am | Same day |
| 7:00 pm | 8:00 am | Same day |
| 8:00 pm | 9:00 am | Same day |
| 9:00 pm | 10:00 am | Same day |
| 10:00 pm | 11:00 am | Same day |
| 11:00 pm | 12:00 pm | Same day |
Daylight saving time
Neither Shanghai nor Porto Alegre observes daylight saving time. The offset between these zones remains constant year-round.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 5:04 AM
- Sunset
- 6:58 PM
- Day length
- 13h 55m
- Sunrise
- 7:18 AM
- Sunset
- 5:46 PM
- Day length
- 10h 28m
Daylight overlap: 40m — 6:18 PM–6:58 PM in Shanghai (7:18 AM–7:58 AM in Porto Alegre). Both locations are in daylight during this window.
Cities in these zones
Other cities in China Standard Time
Other cities in Brasilia Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in China Standard Time
- PVG
- SHA
- PEK
- PKX
- SZX
- CAN
- FUO
- CTU
- TFU
- TSN
Airports in Brasilia Time
- CGH
- GRU
- GIG
- SDU
- CNF
- BSB
- CWB
- GYN
- POA
Related conversions
Common conversions
- What is 9:00 am Shanghai in Porto Alegre?
- 9:00 am Shanghai is 10:00 pm Porto Alegre, the previous day.
- What is 12:00 pm Shanghai in Porto Alegre?
- 12:00 pm Shanghai is 1:00 am Porto Alegre.
- What is 12:30 pm Shanghai in Porto Alegre?
- 12:30 pm Shanghai is 1:30 am Porto Alegre.
- What is 2:00 pm Shanghai in Porto Alegre?
- 2:00 pm Shanghai is 3:00 am Porto Alegre.
- What is 5:00 pm Shanghai in Porto Alegre?
- 5:00 pm Shanghai is 6:00 am Porto Alegre.
- What is 11:30 pm Shanghai in Porto Alegre?
- 11:30 pm Shanghai is 12:30 pm Porto Alegre.