| Mauritania Bosnia and Herzegovina | Central European Time | -02:00 |
| Mauritania Costa Rica | Central Time | 06:00 |
| Mauritania Croatia | Central European Time | -02:00 |
| Mauritania New Zealand | New Zealand Time | -12:00 |
| Mauritania Lebanon | Eastern European Time | -03:00 |
| Mauritania Puerto Rico | Argentina Time | 03:00 |
| Mauritania Liberia | Greenwich Mean Time | 00:00 |
| Mauritania Uruguay | Uruguay Time | 03:00 |
| Mauritania Panama | Central Time | 05:00 |
| Mauritania Mauritania | Greenwich Mean Time | 00:00 |
| Mauritania Congo | West Africa Time | -01:00 |
| Mauritania Albania | Central European Time | -02:00 |
| Mauritania Armenia | Armenia Time | -04:00 |
| Mauritania Lithuania | Eastern European Time | -03:00 |
| Mauritania Jamaica | Eastern Time | 05:00 |
| Mauritania Kuwait | Arabian Time | -03:00 |
| Mauritania Latvia | Eastern European Time | -03:00 |
| Mauritania Namibia | Central Africa Time | -02:00 |
| Mauritania Botswana | Central Africa Time | -02:00 |
| Mauritania Slovenia | Central European Time | -02:00 |
| Mauritania Lesotho | South Africa Standard Time | -02:00 |
| Mauritania The Gambia | Eastern Australia Time | -10:00 |
| Mauritania Guinea-Bissau | Greenwich Mean Time | 00:00 |
| Mauritania Gabon | West Africa Time | -01:00 |
| Mauritania Swaziland | South Africa Standard Time | -02:00 |
| Mauritania Mauritius | Mauritius Time | -04:00 |
| Mauritania Estonia | Eastern European Time | -03:00 |
| Mauritania Timor-Leste | East Timor Time | -09:00 |
| Mauritania Equatorial Guinea | West Africa Time | -01:00 |
| Mauritania Fiji | Fiji Time | -12:00 |
| Mauritania Qatar | Arabian Time | -03:00 |
| Mauritania Reunion | Reunion Time | -04:00 |
| Mauritania Comoros | East Africa Time | -03:00 |
| Mauritania Guyana | Guyana Time | 04:00 |
| Mauritania Djibouti | East Africa Time | -03:00 |
| Mauritania Bahrain | Arabian Time | -03:00 |
| Mauritania Bhutan | Bhutan Time | -06:00 |
| Mauritania Solomon Islands | Solomon Islands Time | -11:00 |
| Mauritania Cape Verde | Cape Verde Time | 01:00 |
| Mauritania Luxembourg | Central European Time | -02:00 |
| Mauritania Suriname | Suriname Time | 03:00 |
| Mauritania Guadeloupe | Atlantic Time | 04:00 |
| Mauritania Martinique | Atlantic Time | 04:00 |
| Mauritania Brunei | Brunei Darussalam Time | -08:00 |
| Mauritania Belize | Central Time | 06:00 |
| Mauritania The Bahamas | Eastern Time | 04:00 |
| Mauritania Barbados | Atlantic Time | 04:00 |
| Mauritania French Polynesia | Tahiti Time | 10:00 |
| Mauritania French Guiana | French Guiana Time | 03:00 |
| Mauritania Samoa | Apia Time | -13:00 |