Offset
The time difference between Istanbul and Callao is 8 hours.
Istanbul (TRT) is ahead of Callao (PET).
TRT: UTC+3
PET: UTC-5
Neither Istanbul nor Callao is currently observing daylight saving time.
When to schedule
Standard business hours (9 AM–5 PM, Mon–Fri) in Istanbul and Callao don't overlap on the same weekday. Callao is 8 hours behind Istanbul.
With some flexibility, there’s a workable window outside standard hours:
- 3 PM–8 PM in Istanbul (7 AM–12 PM in Callao) — suggest 5:00 PM Istanbul (9:00 AM Callao).
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.
Turkey
- New Year's DayThu, Jan 1
- National Independence & Children's DayThu, Apr 23
- Labour DayFri, May 1
- Atatürk Commemoration & Youth DayTue, May 19
- Democracy and National Unity DayWed, Jul 15
- Victory DaySun, Aug 30
- Republic DayThu, Oct 29
Peru
- New Year's DayThu, Jan 1
- Holy ThursdayThu, Apr 2
- Maundy ThursdayThu, Apr 2
- Good FridayFri, Apr 3
- Easter SundaySun, Apr 5
- International Workers' DayFri, May 1
- Saint Peter and Saint PaulMon, Jun 29
- Independence DayTue, Jul 28
- Independence DayWed, Jul 29
- Santa Rosa de LimaSun, Aug 30
- Battle of AngamosThu, Oct 8
- All Saints DaySun, Nov 1
- Immaculate ConceptionTue, Dec 8
- Christmas DayFri, Dec 25
About these zones
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| Istanbul | Callao | Day |
|---|---|---|
| 12:00 am | 4:00 pm | -1 day |
| 1:00 am | 5:00 pm | -1 day |
| 2:00 am | 6:00 pm | -1 day |
| 3:00 am | 7:00 pm | -1 day |
| 4:00 am | 8:00 pm | -1 day |
| 5:00 am | 9:00 pm | -1 day |
| 6:00 am | 10:00 pm | -1 day |
| 7:00 am | 11:00 pm | -1 day |
| 8:00 am | 12:00 am | Same day |
| 9:00 am | 1:00 am | Same day |
| 10:00 am | 2:00 am | Same day |
| 11:00 am | 3:00 am | Same day |
| 12:00 pm | 4:00 am | Same day |
| 1:00 pm | 5:00 am | Same day |
| 2:00 pm | 6:00 am | Same day |
| 3:00 pm | 7:00 am | Same day |
| 4:00 pm | 8:00 am | Same day |
| 5:00 pm | 9:00 am | Same day |
| 6:00 pm | 10:00 am | Same day |
| 7:00 pm | 11:00 am | Same day |
| 8:00 pm | 12:00 pm | Same day |
| 9:00 pm | 1:00 pm | Same day |
| 10:00 pm | 2:00 pm | Same day |
| 11:00 pm | 3:00 pm | Same day |
Daylight saving time
Neither Istanbul nor Callao 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
- 5:52 AM
- Sunset
- 8:31 PM
- Day length
- 14h 39m
- Sunrise
- 6:30 AM
- Sunset
- 6:01 PM
- Day length
- 11h 31m
Daylight overlap: 6h 1m — 2:30 PM–8:31 PM in Istanbul (6:30 AM–12:31 PM in Callao). Both locations are in daylight during this window.
Cities in these zones
Other cities in Turkey Time
Other cities in Peru Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Turkey Time
- IST
- SAW
- ESB
- YEI
- ADB
- GZT
- DIY
- ADA
- COV
- ASR
Airports in Peru Time
- LIM
Related conversions
Common conversions
- What is 9:00 am Istanbul in Callao?
- 9:00 am Istanbul is 1:00 am Callao.
- What is 12:00 pm Istanbul in Callao?
- 12:00 pm Istanbul is 4:00 am Callao.
- What is 12:30 pm Istanbul in Callao?
- 12:30 pm Istanbul is 4:30 am Callao.
- What is 2:00 pm Istanbul in Callao?
- 2:00 pm Istanbul is 6:00 am Callao.
- What is 5:00 pm Istanbul in Callao?
- 5:00 pm Istanbul is 9:00 am Callao.
- What is 11:30 pm Istanbul in Callao?
- 11:30 pm Istanbul is 3:30 pm Callao.