Time difference between Mar del Plata and Chicago

Chicago is 2 hours behind Mar del Plata.

America/Argentina/Buenos_Aires America/Chicago same day

Local time in both cities

Mar del Plata · Argentina
17:00
Monday, 21 September 2026
America/Argentina/Buenos_Aires · UTC-03:00
Chicago · United States
15:00
Monday, 21 September 2026
America/Chicago · UTC-05:00

Chicago is 2 hours behind Mar del Plata.

same day

Time zones

Mar del PlataAmerica/Argentina/Buenos_Aires · UTC-03:00
ChicagoAmerica/Chicago · UTC-05:00

Mar del Plata does not observe daylight saving and stays on UTC-03:00 all year.

Chicago is currently on daylight saving time (UTC-05:00). Next change: 2026-11-01 01:00.

Hour-by-hour conversion

Calculated for 2026-09-21 local time in Mar del Plata. The two places start and end daylight saving on different dates, so another day can give a different result.

Mar del Plata (source) Chicago (target)
00:00 22:00 prev day
01:00 23:00 prev day
02:00 00:00
03:00 01:00
04:00 02:00
05:00 03:00
06:00 04:00
07:00 05:00
08:00 06:00
09:00 07:00
10:00 08:00
11:00 09:00
12:00 10:00
13:00 11:00
14:00 12:00
15:00 13:00
16:00 14:00
17:00 15:00
18:00 16:00
19:00 17:00
20:00 18:00
21:00 19:00
22:00 20:00
23:00 21:00

FAQ

How many hours apart are Mar del Plata and Chicago right now?
The answer at the top of the page is calculated for the current moment and states which side is ahead. The gap changes during the year, because the two places usually start and end daylight saving on different dates.
Is this difference the same all year?
Not necessarily. Mar del Plata uses America/Argentina/Buenos_Aires and Chicago uses America/Chicago; if either observes daylight saving, the gap shifts during the year. Use “Convert a specific date and time” below to calculate it for a given day.
How do I read the conversion table?
The left column lists each whole hour in Mar del Plata; the right column is the local time in Chicago at that same instant, with date rollovers marked. On the day clocks jump forward, some hours do not exist locally — the table says so instead of showing a plausible but wrong value.

Both cities