Time Difference Between Chicago and Ulaanbaatar

Chicago is 13h 0m behind Ulaanbaatar. This difference shifts by an hour around daylight saving time changes.

Chicago, United States
12:38:01AM

Tuesday, June 23, 2026

UTC-5 · CDT

Ulaanbaatar, Mongolia
1:38:01PM

Tuesday, June 23, 2026

UTC+8

Best time to connect

Standard working hours (9:00 AM–5:00 PM) in Chicago fall between 10:00 PM and 6:00 AM (next day) in Ulaanbaatar.

Chicago

UTC-5

Current time in Chicago →

Ulaanbaatar

UTC+8

Current time in Ulaanbaatar →
Convert a specific time from Chicago to Ulaanbaatar

Frequently asked questions

How many hours is Ulaanbaatar ahead of Chicago?
Chicago is 13h 0m behind Ulaanbaatar. Note that this changes by an hour across daylight saving time transitions.
Do Chicago and Ulaanbaatar observe daylight saving time?
Chicago observes daylight saving time, and Ulaanbaatar does not observe it. Because of that, the gap is 14h 0m for part of the year and 13h 0m for the rest.