Rio de Janeiro, Brazil Ulaanbaatar, Mongolia
Compare time between Rio de Janeiro and Ulaanbaatar
Frequently Asked Questions
Rio de Janeiro is in the -03 timezone (UTC-3) and Ulaanbaatar is in the +08 timezone (UTC+8). The time difference between them is 11 hours.
Use the timeline above to find overlapping business hours between Rio de Janeiro and Ulaanbaatar. The "Best time to meet" card highlights the window where both cities are within working hours (9 AM – 6 PM local time).
Neither Rio de Janeiro nor Ulaanbaatar observes Daylight Saving Time, so the time difference remains constant throughout the year.
Click the pencil icon next to the Rio de Janeiro clock and type any time. The Ulaanbaatar clock will update instantly, showing the exact corresponding time. You can also pick a date to account for DST changes.