| Helsinki Manali | India Standard Time | -03:30 |
| Helsinki Malton | United Kingdom Time | 02:00 |
| Helsinki Malvern | Eastern Australia Time | -09:00 |
| Helsinki Malvern | Eastern Time | 07:00 |
| Helsinki Malkishua | Eastern European Time | 00:00 |
| Helsinki Mallemort | Central European Time | 01:00 |
| Helsinki Malles Venosta | Central European Time | 01:00 |
| Helsinki Malmedy | Central European Time | 01:00 |
| Helsinki Malinalco | Central Time | 08:00 |
| Helsinki Maliaño | Central European Time | 01:00 |
| Helsinki Malibu | Pacific Time | 10:00 |
| Helsinki Maleny | Eastern Australia Time | -08:00 |
| Helsinki Maldon | Eastern Australia Time | -09:00 |
| Helsinki Malay | Philippine Time | -06:00 |
| Helsinki Mahabaleshwar | India Standard Time | -03:30 |
| Helsinki Mahabalipuram | India Standard Time | -03:30 |
| Helsinki Magdalena del Mar | Peru Time | 07:00 |
| Helsinki Magill | Central Australia Time | -08:30 |
| Helsinki Mahikeng | South Africa Standard Time | 00:00 |
| Helsinki Mahboula | Arabian Time | -01:00 |
| Helsinki Mahon | Central European Time | 01:00 |
| Helsinki Maiden Gully | Eastern Australia Time | -09:00 |
| Helsinki Main Beach | Eastern Australia Time | -08:00 |
| Helsinki Mainbernheim | Central European Time | 01:00 |
| Helsinki Maïné-Soroa | West Africa Time | 01:00 |
| Helsinki Makarska | Central European Time | 01:00 |
| Helsinki Maketu | New Zealand Time | -11:00 |
| Helsinki Makawao | Hawaii-Aleutian Time | 12:00 |
| Helsinki Makrandpur Thakuran | India Standard Time | -03:30 |
| Helsinki Malaimedu | India Standard Time | -03:30 |
| Helsinki Malalbergo | Central European Time | 01:00 |
| Helsinki Maladi | India Standard Time | -03:30 |
| Helsinki Malaga | Western Australia Time | -06:00 |
| Helsinki Lucinges | Central European Time | 01:00 |
| Helsinki Lucedale | Central Time | 08:00 |
| Helsinki Lucerne | Central European Time | 01:00 |
| Helsinki Lovington | Mountain Time | 09:00 |
| Helsinki Lovedale | Eastern Australia Time | -09:00 |
| Helsinki Lozza | Central European Time | 01:00 |
| Helsinki Lower Heyford | United Kingdom Time | 02:00 |
| Helsinki Luang Prabang | Indochina Time | -05:00 |
| Helsinki Luján de Cuyo | Argentina Time | 05:00 |
| Helsinki Luhe-Wildenau | Central European Time | 01:00 |
| Helsinki Luisant | Central European Time | 01:00 |
| Helsinki Luján | Argentina Time | 05:00 |
| Helsinki Lunas | Malaysia Time | -06:00 |
| Helsinki Lutherville-Timonium | Eastern Time | 07:00 |
| Helsinki Luserna San Giovanni | Central European Time | 01:00 |
| Helsinki Luquillo | Atlantic Time | 06:00 |
| Helsinki Luverne | Central Time | 08:00 |