Time in Richardson vs Buenos Aires

Richardson keeps CDT (UTC−5) and Buenos Aires keeps UTC−3 (UTC−3) today. Buenos Aires is 2 hours ahead of Richardson; the rows below read both clocks live.

The working day, side by side

Hours shaded in both rows are inside working hours in both cities: 11:00–18:00 in Buenos Aires (09:00–16:00 your time).

Richardson and Buenos Aires hour by hour, with the working-hour overlap shaded
City	00:00 in Richardson	01:00 in Richardson	02:00 in Richardson	03:00 in Richardson	04:00 in Richardson	05:00 in Richardson	06:00 in Richardson	07:00 in Richardson	08:00 in Richardson	09:00 in Richardson	10:00 in Richardson	11:00 in Richardson	12:00 in Richardson	13:00 in Richardson	14:00 in Richardson	15:00 in Richardson	16:00 in Richardson	17:00 in Richardson	18:00 in Richardson	19:00 in Richardson	20:00 in Richardson	21:00 in Richardson	22:00 in Richardson	23:00 in Richardson
Richardson——	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23
Buenos Aires——	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23

Working hours
Shoulder
Night
Overlap

Do more with Richardson and Buenos Aires

Open in the PlannerAdd more cities, find a meeting time that works for everyone, then share it as a link.Open in Watch ViewKeep Richardson, Buenos Aires and other cities on screen as live clocks, under an animated sky and sun.

Best hours to call

09:00 in Richardson

Inside working hours on both sides

11:00 in Buenos Aires

10:00 in Richardson

Inside working hours on both sides

12:00 in Buenos Aires

11:00 in Richardson

Inside working hours on both sides

13:00 in Buenos Aires

12:00 in Richardson

Inside working hours on both sides

14:00 in Buenos Aires

Where daylight saving pulls them apart

Richardson next changes on Sunday 1 November 2026. Between those two dates the gap between the cities is an hour different from the one shown above — which is exactly when a recurring meeting drifts. Every date we track is on the daylight saving page.

Also useful

Common questions

How many hours ahead is Buenos Aires of Richardson?

Buenos Aires is 2 hours ahead of Richardson right now. The gap is not fixed: it moves whenever either side changes its clocks.

What is the best time to call between Richardson and Buenos Aires?

Any hour in 09:00–16:00 Richardson time is inside working hours in both cities.

Do Richardson and Buenos Aires change clocks on the same date?

Only one of them does, so the gap between them changes twice a year even though neither city moved relative to the sun.