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What Time Is It in Guinea-Bissau Right Now?
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Guinea-Bissau Time Difference Tool - Convert Time Easily
Easily convert time zones between Guinea-Bissau and any city, country, or time zone in the world. Use this tool to check the current time difference and plan meetings, calls, or travel with confidence. Choose any location as the primary reference point to display the time difference.
Explore Professional Features04:28AM
🌍 Time Zone Converter Guide
Compare times across different zones and explore any moment in the day
Click the up arrow to make any timezone your reference point. All time differences will be calculated from this base.
Drag the grip icon to rearrange timezones in your preferred order. Base timezone cannot be dragged but others can be reordered.
Click the X button to delete a timezone from your comparison. Cannot remove if it's the only one left.
Use the slider below to explore different times. Drag to see how times change across all zones simultaneously.
View hour tiles showing the full 24-hour day. Use the time slider to navigate through different hours. Darker tiles indicate nighttime hours.
Switch between 12h/24h format and choose "Each" to set different formats per timezone or "All" to apply the same format to all zones.
💡 Pro tip: Add more timezones using the search above, then set one as your base to see all time differences at a glance!
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Daylight Saving Time Changes in Africa/Bissau
Track historical and upcoming DST transitions for Africa/Bissau from 1900 to 2050. See when clocks spring forward or fall back and how the UTC offset changes.
Current Status in Africa/Bissau
Greenwich Mean Time (GMT)
UTC+0
Next Change
No scheduled changes
| Date | Time | Change Type | UTC Offset |
|---|---|---|---|
| No DST changes found for the selected time zone and year range | |||
Guinea-Bissau Time Zones & Neighboring Countries
| IANA Time Zone | Full Name | Abbr | UTC Offset | DST Offset |
|---|---|---|---|---|
Africa/Bissau CAPITAL | Greenwich Mean Time | GMT | +0 Hours | +0 Hours |
Guinea-Bissau Time Zone: UTC+0 (GMT) Across the Mainland and the Bijagós
Guinea-Bissau uses Greenwich Mean Time (GMT), UTC+0, with no daylight saving. That has only been true since 1975 - before then the country sat an hour behind both of its neighbours.
Time zone: UTC+0 (GMT)
Daylight saving: No
IANA identifier: Africa/Bissau
Zones nationwide: One
Quick Reference: Greenwich Mean Time (GMT)
Item | Value |
|---|---|
Time zone | Greenwich Mean Time (GMT) |
UTC offset | UTC+0, unchanged all year |
Daylight saving time | Not observed |
Clock changes | None |
IANA identifier | Africa/Bissau |
Number of time zones | 1 |
The 1975 Shift That Removed Two Offset Boundaries at Once
The country was on UTC−1 for most of the twentieth century. From 1912 until 1975 the territory kept an offset an hour behind Greenwich, so every crossing into Senegal or Guinea moved a watch forward. In 1975 the clocks went forward permanently and the country joined GMT - both frontiers stopped being time boundaries in the same moment. Cabo Verde made its own forward shift the same year but stopped at UTC−1, which is why the two remain an hour apart today.
One Time Zone Across the Mainland and the Islands
Africa/Bissau covers water and land alike. Bubaque, Bolama and the rest of the Bijagós read the capital's hour with no unofficial variation. What differs on the islands is not the clock but the timetable: crossings between them depend on tides rather than on the hour, so a departure time quoted for an island run is set against the water rather than the working day. Always confirm schedules directly with the operator.
Time Difference With Portuguese-Speaking Countries
The language group is spread across five offsets. São Tomé and Príncipe is the only one that shares UTC+0 in every month; Portugal matches through the northern winter and moves an hour ahead for the European summer. Cabo Verde sits an hour behind, Angola an hour ahead, Mozambique two, and Brazil further back again - which means no single working hour is shared by all of them at once.
Daylight Saving Time in Guinea-Bissau: None Under Either Offset
No seasonal variant has ever applied. Neither the pre-1975 UTC−1 nor today's GMT carried a summer rule, so the time zone database records one permanent transition and nothing else. Introducing a changeover would reopen the boundaries that the 1975 shift closed.
Time Difference With Major Cities
City | Difference from local time |
|---|---|
Same time, in every month | |
1 hour behind, both sides fixed | |
1 hour ahead, unchanged | |
2 hours ahead, unchanged | |
Same time, or 1 hour ahead in the northern summer | |
1 hour ahead, becoming 2 in the European summer | |
5 hours behind, narrowing to 4 in the northern summer |
Best Time to Call Guinea-Bissau
Europe covers most of the working day. Lisbon reads the same hour through the northern winter and an hour ahead in summer, so a Portuguese caller reaches the local day at almost any point in either season; Paris and Brussels are one step further out. Dakar and Conakry need no conversion at all. The Americas are the tight direction - New York opens as the Bissau afternoon is closing, which leaves the local early evening as the workable slot.
Frequently Asked Questions About Time in Guinea-Bissau
Is Guinea-Bissau on GMT?
Yes, in every month, with no summer variant.
Did the country ever use a different offset?
It did - UTC−1 until 1975, when the clocks moved forward an hour permanently.
What time is it in Bissau when it's noon in Lisbon?
Also noon through the northern winter, and eleven in the morning once Portugal moves to summer time.
Is Guinea-Bissau the same time as Cabo Verde?
No. Praia sits an hour behind on UTC−1, permanently, since neither side shifts.
Is Guinea-Bissau the same time as Senegal?
Yes, and the same as Guinea - both land borders read UTC+0 with no changeover.
Is Guinea-Bissau ahead of or behind Brazil?
Ahead. São Paulo sits three hours back, and neither side changes clocks.
Which identifier should software store?
Africa/Bissau, covering the mainland and the islands together.