Difference time between Sierra Leone and Mongolia in hours, minutes, and seconds is [ -8 hours ] with gregorian date today is Saturday 28th of February 2026 in Sierra Leonean local time, Where the time now in Sierra Leone is 10:04 AM and the time now in Mongolia is 18:04 PM in Mongolian local time and the time comparison between Republic of Sierra Leone and Mongolia in greenwich time ( GMT ) where Sierra Leone advanced about greenwich time ( GMT +00:00 ) while Mongolia advanced about greenwich time ( GMT +08:00 ).