| Chennai Monroe Township | Eastern Time | 09:30 |
| Chennai Bir Tam Tam | Western European Time | 04:30 |
| Chennai Mavivi | Central Africa Time | 03:30 |
| Chennai Bioggio | Central European Time | 03:30 |
| Chennai Monreal del Campo | Central European Time | 03:30 |
| Chennai Biougra | Western European Time | 04:30 |
| Chennai Monona | Central Time | 10:30 |
| Chennai Bir Ali Ben Khlifa | Central European Time | 04:30 |
| Chennai Monkton | Eastern Time | 09:30 |
| Chennai Monmouth | Central Time | 10:30 |
| Chennai Moniga del Garda | Central European Time | 03:30 |
| Chennai Monguelfo-Tesido | Central European Time | 03:30 |
| Chennai Mönchengladbach | Central European Time | 03:30 |
| Chennai Monchique | Western European Time | 04:30 |
| Chennai McMurray | Eastern Time | 09:30 |
| Chennai McRae | Eastern Time | 09:30 |
| Chennai Mdina | Central European Time | 03:30 |
| Chennai Meadow Lake | Central Time | 11:30 |
| Chennai McKinnon | Eastern Australia Time | -04:30 |
| Chennai Meadville | Eastern Time | 09:30 |
| Chennai Meaford | Eastern Time | 09:30 |
| Chennai Mecina-Fondales | Central European Time | 03:30 |
| Chennai Meckenbeuren | Central European Time | 03:30 |
| Chennai Mecheri | India Standard Time | 00:00 |
| Chennai Mebane | Eastern Time | 09:30 |
| Chennai Mechanicsburg | Eastern Time | 09:30 |
| Chennai Mbour | Greenwich Mean Time | 05:30 |
| Chennai McCammon | Mountain Time | 11:30 |
| Chennai Makrandpur Thakuran | India Standard Time | 00:00 |
| Chennai Makarska | Central European Time | 03:30 |
| Chennai Makawao | Hawaii-Aleutian Time | 15:30 |
| Chennai Maketu | New Zealand Time | -06:30 |
| Chennai Main Beach | Eastern Australia Time | -04:30 |
| Chennai Mainbernheim | Central European Time | 03:30 |
| Chennai Maïné-Soroa | West Africa Time | 04:30 |
| Chennai Maiden Gully | Eastern Australia Time | -04:30 |
| Chennai Mahikeng | South Africa Standard Time | 03:30 |
| Chennai Mahon | Central European Time | 03:30 |