| Mainz Umpqua | Pacific Time | 09:00 |
| Mainz San Phi Suea | Indochina Time | -05:00 |
| Mainz Umhlanga | South Africa Standard Time | 00:00 |
| Mainz San Pedro La Laguna | Central Time | 08:00 |
| Mainz Umm Al Arais | Central European Time | 01:00 |
| Mainz San Pedro | Central Time | 08:00 |
| Mainz Underwood | Eastern Australia Time | -08:00 |
| Mainz Saint Lucia | Eastern Australia Time | -08:00 |
| Mainz Unawatuna | India Standard Time | -03:30 |
| Mainz Saint-Martin-de-Belleville | Central European Time | 00:00 |
| Mainz Ujire | India Standard Time | -03:30 |
| Mainz Saint-Marcel-Campes | Central European Time | 00:00 |
| Mainz Ukai | India Standard Time | -03:30 |
| Mainz Saint Margrethen | Central European Time | 00:00 |
| Mainz Ulladulla | Eastern Australia Time | -08:00 |
| Mainz San Rafael | Central European Time | 00:00 |
| Mainz Ullur | India Standard Time | -03:30 |
| Mainz San Ramon | Central Time | 08:00 |
| Mainz Ulcinj | Central European Time | 00:00 |
| Mainz San Vito al Tagliamento | Central European Time | 00:00 |
| Mainz Ulundurpet | India Standard Time | -03:30 |
| Mainz San Vito Lo Capo | Central European Time | 00:00 |
| Mainz Ulverston | United Kingdom Time | 01:00 |
| Mainz Saint Clairsville | Eastern Time | 06:00 |
| Mainz Ulverstone | Eastern Australia Time | -08:00 |
| Mainz Saint Davids | United Kingdom Time | 01:00 |
| Mainz Ulmen | Central European Time | 00:00 |
| Mainz Saint Croix Falls | Central Time | 07:00 |
| Mainz Ulrichsberg | Central European Time | 00:00 |
| Mainz Saint-Émilion | Central European Time | 00:00 |
| Mainz Ultimo | Eastern Australia Time | -08:00 |
| Mainz Saint-Denis-de-l'Hôtel | Central European Time | 00:00 |
| Mainz Union Gap | Pacific Time | 09:00 |
| Mainz Saint Francis | Central Time | 07:00 |
| Mainz Weinstadt | Central European Time | 00:00 |
| Mainz Saint Georg | Central European Time | 00:00 |
| Mainz Weilheim in Oberbayern | Central European Time | 00:00 |
| Mainz Saint George | Eastern Australia Time | -08:00 |
| Mainz Weidenbach | Central European Time | 00:00 |
| Mainz Saint-Georges | Eastern Time | 06:00 |
| Mainz Weinfelden | Central European Time | 00:00 |
| Mainz Saint-Georges | Eastern Time | 06:00 |
| Mainz Welschenbach | Central European Time | 00:00 |
| Mainz Saint-Georges-sur-Meuse | Central European Time | 00:00 |
| Mainz Wembley | Western Australia Time | -06:00 |
| Mainz Saint Julian's | Central European Time | 00:00 |
| Mainz Wembley | United Kingdom Time | 01:00 |
| Mainz Saint-Just-Saint-Rambert | Central European Time | 00:00 |
| Mainz Wemmel | Central European Time | 00:00 |
| Mainz Saint-Leonard | Eastern Time | 06:00 |