Time difference between Istanbul and Porto
Compare the current local time in Istanbul and Porto, see when your working hours overlap, and convert any specific hour between the two timezones.
--:--
—
--:--
—
Convert a specific time
--:--
--:--
Working-hours overlap
When Istanbul's 9:00–18:00 business hours overlap with Porto's.
Istanbul working hours
Porto working hours
Overlap (both working)
🇹🇷 Istanbul
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
🇵🇹 Porto
Scheduling across Istanbul and Porto
Working across Istanbul and Porto is very easy. Their standard business hours overlap for around 7 hours every day, from 11:00 to 18:00 in Istanbul (09:00 to 16:00 in Porto). Meetings can sit comfortably inside the regular working day on both sides.
Quick reference
| 🇹🇷 Istanbul | 🇵🇹 Porto | In Porto it's… |
|---|---|---|
| 06:00 — Early morning | — | — |
| 09:00 — Start of work | — | — |
| 12:00 — Lunchtime | — | — |
| 15:00 — Mid-afternoon | — | — |
| 17:00 — End of work | — | — |
| 20:00 — Evening | — | — |
Daylight saving status
🇹🇷 Istanbul
Istanbul does not observe daylight saving time. The local offset is fixed year-round.
🇵🇹 Porto
Currently in WEST (daylight saving)
Clocks go back to GMT
on Sunday 25 October 2026