| Calabar McRae | Eastern Time | 05:00 |
| Calabar Mdina | Central European Time | -01:00 |
| Calabar McCammon | Mountain Time | 07:00 |
| Calabar Mbour | Greenwich Mean Time | 01:00 |
| Calabar Makarska | Central European Time | -01:00 |
| Calabar Maketu | New Zealand Time | -11:00 |
| Calabar Makawao | Hawaii-Aleutian Time | 11:00 |
| Calabar Makrandpur Thakuran | India Standard Time | -04:30 |
| Calabar Naqoura | Eastern European Time | -02:00 |
| Calabar Naples | Central European Time | -01:00 |
| Calabar Napoleon | Eastern Time | 05:00 |
| Calabar Montana | Central European Time | -01:00 |
| Calabar Montanara | Central European Time | -01:00 |
| Calabar Mont-Tremblant | Eastern Time | 05:00 |
| Calabar Montague | Eastern Time | 05:00 |
| Calabar Montague | Atlantic Time | 04:00 |
| Calabar Montblanc | Central European Time | -01:00 |
| Calabar Montauk | Eastern Time | 05:00 |
| Calabar Napier | New Zealand Time | -11:00 |
| Calabar Napier | South Africa Standard Time | -01:00 |
| Calabar Narusawa | Japan Time | -08:00 |
| Calabar Narrabeen | Eastern Australia Time | -09:00 |
| Calabar Narragansett | Eastern Time | 05:00 |
| Calabar Mollem | India Standard Time | -04:30 |
| Calabar Mollerussa | Central European Time | -01:00 |
| Calabar Mollis | Central European Time | -01:00 |
| Calabar Monastero Bormida | Central European Time | -01:00 |
| Calabar Monastier di Treviso | Central European Time | -01:00 |
| Calabar Mönchengladbach | Central European Time | -01:00 |
| Calabar Monchique | Western European Time | 00:00 |
| Calabar Monreal del Campo | Central European Time | -01:00 |
| Calabar Monroe Township | Eastern Time | 05:00 |
| Calabar Mont Albert | Eastern Australia Time | -09:00 |
| Calabar Monguelfo-Tesido | Central European Time | -01:00 |
| Calabar Moniga del Garda | Central European Time | -01:00 |
| Calabar Monona | Central Time | 06:00 |
| Calabar Monkton | Eastern Time | 05:00 |
| Calabar Monmouth | Central Time | 06:00 |