Daylight saving time
New York (USA) observes daylight saving time from the second Sunday of March to the first Sunday of November: UTC−5 in January, UTC−4 in July. Chicago (USA) observes daylight saving time from the second Sunday of March to the first Sunday of November: UTC−6 in January, UTC−5 in July.
New York is on US Eastern Time: EST (UTC−5) in winter and EDT (UTC−4) in summer.
Best time for a call
If both sides work 9:00–18:00 local time, the shared window is 10:00–18:00 in New York = 09:00–17:00 in Chicago (8 hours). Put recurring calls in this window and state the time with the city name (for example “14:00 New York time”) to avoid confusion. How to schedule a meeting across time zones.
How to read the chart
The left column is the local time in New York, the other column shows the same moment in Chicago. “+1 day” means it is already the next calendar day in Chicago, “−1 day” — still the previous one. Rows outside 9:00–18:00 are dimmed. The converter above works the other way too: press “Swap” to enter a time in Chicago.