| Hefei Jim Thorpe | Eastern Time | 12:00 |
| Hefei Mahon | Central European Time | 06:00 |
| Hefei Jinan | China Time | 00:00 |
| Hefei Maiden Gully | Eastern Australia Time | -02:00 |
| Hefei Jindalee | Eastern Australia Time | -02:00 |
| Hefei Main Beach | Eastern Australia Time | -02:00 |
| Hefei Jindivick | Eastern Australia Time | -02:00 |
| Hefei Mainbernheim | Central European Time | 06:00 |
| Hefei Maïné-Soroa | West Africa Time | 07:00 |
| Hefei Lillois-Witterzée | Central European Time | 06:00 |
| Hefei Limbourg | Central European Time | 06:00 |
| Hefei Limburg | Central European Time | 06:00 |
| Hefei Limerick | Ireland Time | 07:00 |
| Hefei Lince | Peru Time | 13:00 |
| Hefei Limoux | Central European Time | 06:00 |
| Hefei Makarska | Central European Time | 06:00 |
| Hefei Maketu | New Zealand Time | -04:00 |
| Hefei Makawao | Hawaii-Aleutian Time | 18:00 |
| Hefei Matheran | India Standard Time | 02:30 |
| Hefei Matinhos | Brasilia Time | 11:00 |
| Hefei Matraville | Eastern Australia Time | -02:00 |
| Hefei Makrandpur Thakuran | India Standard Time | 02:30 |
| Hefei Matawan | Eastern Time | 12:00 |
| Hefei Matarbari | Bangladesh Time | 02:00 |
| Hefei Moka | Mauritius Time | 04:00 |
| Hefei Mayotte | Eastern Time | 12:00 |
| Hefei Mayville | Eastern Time | 12:00 |
| Hefei Mayfield | Central Time | 13:00 |
| Hefei Maylands | Western Australia Time | 00:00 |
| Hefei Mayfield | Eastern Australia Time | -02:00 |
| Hefei Mayfield | United Kingdom Time | 07:00 |
| Hefei Mawgan | United Kingdom Time | 07:00 |
| Hefei Mavivi | Central Africa Time | 06:00 |
| Hefei Mawson Lakes | Central Australia Time | -01:30 |
| Hefei Maxey | United Kingdom Time | 07:00 |
| Hefei Maude | Eastern Australia Time | -02:00 |
| Hefei Maumee | Eastern Time | 12:00 |
| Hefei Matten bei Interlaken | Central European Time | 06:00 |