| Kolkata Kohoku Ward | Japan Time | -03:30 |
| Kolkata La Escalona | Western European Time | 04:30 |
| Kolkata Monticello | Eastern Time | 09:30 |
| Kolkata La Croix-sur-Gartempe | Central European Time | 03:30 |
| Kolkata Montpelier | Eastern Time | 09:30 |
| Kolkata La Horqueta | Argentina Time | 08:30 |
| Kolkata Montrose | Atlantic Time | 09:30 |
| Kolkata La Jonquera | Central European Time | 03:30 |
| Kolkata Montreal | Eastern Time | 09:30 |
| Kolkata La Joya | Central Time | 10:30 |
| Kolkata Montreal East | Eastern Time | 09:30 |
| Kolkata La Palma | Central European Time | 03:30 |
| Kolkata Nala Sopara | India Standard Time | 00:00 |
| Kolkata La Matanza de Acentejo | Western European Time | 04:30 |
| Kolkata Náměšť nad Oslavou | Central European Time | 03:30 |
| Kolkata Leichhardt | Eastern Australia Time | -04:30 |
| Kolkata Namur | Central European Time | 03:30 |
| Kolkata Leirvik | Central European Time | 03:30 |
| Kolkata Monteverde | Central Time | 11:30 |
| Kolkata Leiston | United Kingdom Time | 04:30 |
| Kolkata Montezuma | Eastern Time | 09:30 |
| Kolkata Matamata | New Zealand Time | -06:30 |
| Kolkata Montecito | Pacific Time | 12:30 |
| Kolkata Mittagong | Eastern Australia Time | -04:30 |
| Kolkata Monteleone D'orvieto | Central European Time | 03:30 |
| Kolkata Mittenwald | Central European Time | 03:30 |
| Kolkata Montélier | Central European Time | 03:30 |
| Kolkata Massa Marittima | Central European Time | 03:30 |
| Kolkata Maylands | Western Australia Time | -02:30 |
| Kolkata Masiri | Iran Time | 01:00 |
| Kolkata Mayotte | Eastern Time | 09:30 |
| Kolkata Maski | India Standard Time | 00:00 |
| Kolkata Mayville | Eastern Time | 09:30 |
| Kolkata Masai | Malaysia Time | -02:30 |
| Kolkata Mayfield | Eastern Australia Time | -04:30 |
| Kolkata Masai | Malaysia Time | -02:30 |
| Kolkata Mayfield | United Kingdom Time | 04:30 |
| Kolkata Mascot | Eastern Australia Time | -04:30 |
| Kolkata Mayfield | Central Time | 10:30 |
| Kolkata Masca | Western European Time | 04:30 |
| Kolkata Monte Sant'Angelo | Central European Time | 03:30 |
| Kolkata Mascali | Central European Time | 03:30 |
| Kolkata Makarska | Central European Time | 03:30 |
| Kolkata Moama | Eastern Australia Time | -04:30 |
| Kolkata Makawao | Hawaii-Aleutian Time | 15:30 |
| Kolkata Mitzpe Ramon | Israel Time | 02:30 |
| Kolkata Maketu | New Zealand Time | -06:30 |
| Kolkata Moffat | United Kingdom Time | 04:30 |
| Kolkata Makrandpur Thakuran | India Standard Time | 00:00 |
| Kolkata Magdalena del Mar | Peru Time | 10:30 |