Difference time between Mauritania and Guyana in hours, minutes, and seconds is [ +4 hours ] with gregorian date today is Sunday 26th of October 2025 in Mauritanian local time, Where the time now in Mauritania is 05:15 AM and the time now in Guyana is 01:15 AM in Guyanese local time and the time comparison between Islamic Republic of Mauritania and Guyana in greenwich time ( GMT ) where Mauritania advanced about greenwich time ( GMT +00:00 ) while Guyana late for greenwich time ( GMT -04:00 ).