Lima, Peru Ulaanbaatar, Mongolia

Lima is in the -05 timezone (UTC-5) and Ulaanbaatar is in the +08 timezone (UTC+8). The time difference between them is 13 hours.

Use the timeline above to find overlapping business hours between Lima 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 Lima nor Ulaanbaatar observes Daylight Saving Time, so the time difference remains constant throughout the year.

Click the pencil icon next to the Lima 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.