| Monchique Wheatley | Central Time | 06:00 |
| Monchique Stadtsteinach | Central European Time | -01:00 |
| Monchique Wheaton-Glenmont | Eastern Time | 05:00 |
| Monchique Stäfa | Central European Time | -01:00 |
| Monchique Whiteman Air Force Base | Central Time | 06:00 |
| Monchique Stafford Township | Eastern Time | 05:00 |
| Monchique Whitesboro | Eastern Time | 05:00 |
| Monchique Standish | United Kingdom Time | 00:00 |
| Monchique Whiteville | Eastern Time | 05:00 |
| Monchique Stanford | Pacific Time | 08:00 |
| Monchique Whitewater | Central Time | 06:00 |
| Monchique Staines-upon-Thames | United Kingdom Time | 00:00 |
| Monchique Staré Město | Central European Time | -01:00 |
| Monchique Stari Grad | Central European Time | -01:00 |
| Monchique Starke | Eastern Time | 05:00 |
| Monchique Singonahalli | India Standard Time | -04:30 |
| Monchique Sint-Lambrechts-Herk | Central European Time | -01:00 |
| Monchique Sint-Martens-Latem | Central European Time | -01:00 |
| Monchique Sint-Jans-Molenbeek | Central European Time | -01:00 |
| Monchique Sint-Niklaas | Central European Time | -01:00 |
| Monchique Sion | Central European Time | -01:00 |
| Monchique Sirumalai | India Standard Time | -04:30 |
| Monchique Siruganur | India Standard Time | -04:30 |
| Monchique Sirkeci | Turkey Time | -02:00 |
| Monchique Sirmione | Central European Time | -01:00 |
| Monchique Santa Catarina | Central Time | 06:00 |
| Monchique Sebastopol | Pacific Time | 08:00 |
| Monchique Seberang Jaya | Malaysia Time | -07:00 |
| Monchique Seberang Perai | Malaysia Time | -07:00 |
| Monchique Searsport | Eastern Time | 05:00 |
| Monchique Seaton Ross | United Kingdom Time | 00:00 |
| Monchique Seattle | Pacific Time | 08:00 |
| Monchique Seebara | India Standard Time | -04:30 |
| Monchique Seekonk | Eastern Time | 05:00 |
| Monchique Seeley's Bay | Eastern Time | 05:00 |
| Monchique Seelow | Central European Time | -01:00 |
| Monchique Segamat District | Malaysia Time | -07:00 |
| Monchique Sechelt | Pacific Time | 08:00 |
| Monchique Sebree | Central Time | 06:00 |
| Monchique Sebring | Eastern Time | 05:00 |
| Monchique Šebrov-Kateřina | Central European Time | -01:00 |
| Monchique Sedona | Mountain Time | 08:00 |
| Monchique Sedro-Woolley | Pacific Time | 08:00 |
| Monchique Seeb | Gulf Standard Time | -03:00 |
| Monchique Sedbergh | United Kingdom Time | 00:00 |
| Monchique Selayang | Malaysia Time | -07:00 |
| Monchique Selinsgrove | Eastern Time | 05:00 |
| Monchique Selouane | Western European Time | 00:00 |
| Monchique Selah | Pacific Time | 08:00 |
| Monchique Selangor | Malaysia Time | -07:00 |