Work in progressTimezonePair is still being built — expect rough edges & missing cities
TimezonePair
Home·Porto·Porto × Philadelphia
Prime meridian·:: UTC·

Porto×Philadelphia

Portugal · PT
Porto
—:—
Europe/Lisbon·
DST active
United States · US
Philadelphia
—:—
America/New_York·
DST active

Porto is 5 hours behind Philadelphia. Scrub a time, meet in the overlap, ship the invite — before the kettle boils.

◊ at a glance

Three numbers. The ones that decide the meeting.

01
Difference
5h behind
Porto vs Philadelphia
02
Overlap
3h
Business hours 09:00 – 17:00
03
UTC offsets
GMT+1 / GMT-4
04
Flight
6h 57m
5,479 km · great-circle, non-stop cruise
◊ the overlap

When the world meets at work.

24-hour overlap
3h shared · 14:00 – 17:00 Porto
Porto
—:—
0
3
6
9
12
15
18
21
Philadelphia
—:—
21
0
3
6
9
12
15
18
Scrub a meeting time14:00 Porto
Same moment in Philadelphia09:00 Philadelphia
◊ hour by hour

Read the day in both zones.

Share this meeting
timezonepair.com/from/porto/to/philadelphia?t=14&a=A&d=2026-04-27&dur=60
14:00 Porto09:00 Philadelphia
Full 24-hour reference
PortoPhiladelphia
00:00
19:00
01:00
20:00
02:00
21:00
03:00
22:00
04:00
23:00
05:00
00:00
06:00
01:00
07:00
02:00
08:00
03:00
09:00Porto only
04:00
10:00Porto only
05:00
11:00Porto only
06:00
12:00Porto only
07:00
13:00Porto only
08:00
14:00Both working
09:00
15:00Both working
10:00
16:00Both working
11:00
17:00
12:00Philadelphia only
18:00
13:00Philadelphia only
19:00
14:00Philadelphia only
20:00
15:00Philadelphia only
21:00
16:00Philadelphia only
22:00
17:00
23:00
18:00
◊ common questions

Quick answers. Before you book the call.

What's the time difference between Porto and Philadelphia?

Porto is 5 hours behind Philadelphia. Porto runs on GMT+1 and Philadelphia on GMT-4. The gap can shift by an hour when either side enters or leaves daylight saving — the live clocks above always reflect the current offset.

When's the best time to schedule a meeting?

There are 3 hours where both cities are inside a 09:00–17:00 workday. Aim for the middle of that window so neither side is starting or closing out.

Does daylight saving time change the difference?

Yes, if either city observes DST. When one side shifts and the other doesn't, the gap changes by one hour. The DST badges under each clock show whether each zone is currently shifted and when the next transition lands.

How far is Porto from Philadelphia?

About 5,479 km as the crow flies (great-circle distance). A non-stop commercial flight cruises that in roughly 6h 57m, not counting airport time, winds, or routing around restricted airspace.

Can I send this meeting time as a calendar invite?

Yes. Pick a time on the slider above, open the meeting card, customize the title and duration, then download the .ics file. It imports cleanly into Google Calendar, Outlook, and Apple Calendar with the correct timezone attached.

◊ keep going

One pair down. 299 cities to go.

Every pair in 300 cities runs the same clocks, the same overlap, the same one-click invite. Pick another.

PORTO · Europe/Lisbon
GMT+1 · 41.16°, -8.63°

PHILADELPHIA · America/New_York
GMT-4 · 39.95°, -75.17°

3h shared · 5h behind