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Guinea-Bissau does NOT observe Daylight Saving Time. Local clocks remain constant throughout the year on standard time, with no seasonal spring/fall 1-hour adjustments.
Optimal overlapping time windows to schedule remote team meetings, vendor synchronization, and client calls between major global economic regions and Guinea-Bissau.
Timezone Twins: The following countries and territories share the exact same standard clock as Guinea-Bissau:
The directory below details the official time zone designations, IANA database identifiers, real-time clocks, and standard UTC offsets active across Guinea-Bissau.
Select a metropolitan center below to view dedicated city clocks, localized solar schedules, and weather patterns.
Complete schedule of national holidays, bank closures, religious festivals, and observances. Switch between years (2024–2028) and filter by holiday category:
| Date | Holiday Name | Classification | Calendar Basis | Office Status |
|---|---|---|---|---|
| 2026-01-01 | New Year's Day | Public | gregorian | Closed 🔴 |
| 2026-01-23 | National Heroes Day | Public | gregorian | Closed 🔴 |
| 2026-05-01 | Labour Day | Public | gregorian | Closed 🔴 |
| 2026-05-25 | Africa Day | Observance | gregorian | Open 🟢 |
| 2026-09-24 | Independence Day | Public | gregorian | Closed 🔴 |
| 2026-08-12 | National Youth Day | Observance | gregorian | Open 🟢 |
| 2026-04-08 | Eid al-Fitr | Religious | islamic | Open 🟢 |
| 2026-06-25 | Eid al-Adha | Religious | islamic | Open 🟢 |
| 2026-12-25 | Christmas Day | Public | gregorian | Closed 🔴 |
| 2026-12-26 | Boxing Day | Public | gregorian | Closed 🔴 |
| 2026-03-08 | Women's Day | Observance | gregorian | Open 🟢 |
| 2026-10-12 | Prophet Muhammad's Birthday | Religious | islamic | Open 🟢 |
Physiological time difference and circadian adjustment expectations when traveling to Guinea-Bissau:
Official format conventions and time standards recognized in Guinea-Bissau:
| Preferred Date Format | DD-MM-YYYY |
|---|---|
| Standard Clock Format | 12-hour |
| First Day of the Week | Monday |
| 24-Hour Military Clock Used? | No (Primarily 12-hour AM/PM) |
Guinea-Bissau has consistently used GMT/UTC.
The current time in Guinea-Bissau is based on Africa/Bissau with a UTC offset of UTC+00:00. Real-time clocks above are synchronized with high-precision atomic stratum-1 time servers.
No, Guinea-Bissau does not observe Daylight Saving Time. Clocks remain on standard time all year.
Standard business hours in Guinea-Bissau are typically 08:00 - 17:00, Monday through Friday.
Refer to the Remote Work Call Planner section above for region-specific recommended calling windows from the US, Europe, and Asia-Pacific.
The international telephone dialing code for Guinea-Bissau is +245.