| Monchique Tarascon | Central European Time | -01:00 |
| Monchique Tarfaya | Western European Time | 00:00 |
| Monchique Tappahannock | Eastern Time | 05:00 |
| Monchique Tanzania | Greenwich Mean Time | 01:00 |
| Monchique Taormina | Central European Time | -01:00 |
| Monchique Sullivan | Central Time | 06:00 |
| Monchique Sullivan City | Central Time | 06:00 |
| Monchique Sullivan's Island | Eastern Time | 05:00 |
| Monchique Sujapur | India Standard Time | -04:30 |
| Monchique Suitland-Silver Hill | Eastern Time | 05:00 |
| Monchique Sudbury | Eastern Time | 05:00 |
| Monchique Suginami | Japan Time | -08:00 |
| Monchique Simpang Ampat | Malaysia Time | -07:00 |
| Monchique Sinaia | Eastern European Time | -02:00 |
| Monchique Simrishamn N | Central European Time | -01:00 |
| Monchique Simpang Renggam | Malaysia Time | -07:00 |
| Monchique Siesta Key | Eastern Time | 05:00 |
| Monchique Sigatoka | Fiji Time | -11:00 |
| Monchique Signal Mountain | Eastern Time | 05:00 |
| Monchique Sikardarpur | India Standard Time | -04:30 |
| Monchique Sigulda | Eastern European Time | -02:00 |
| Monchique Siheung-si | Korean Time | -08:00 |
| Monchique Silverton | Pacific Time | 08:00 |
| Monchique Silveira | Western European Time | 00:00 |
| Monchique Sikkarimedu | India Standard Time | -04:30 |
| Monchique Silay City | Philippine Time | -07:00 |
| Monchique Yorktown Heights | Eastern Time | 05:00 |
| Monchique Yoshinogari | Japan Time | -08:00 |
| Monchique Yoxford | United Kingdom Time | 00:00 |
| Monchique Youngsville | Central Time | 06:00 |
| Monchique Yountville | Pacific Time | 08:00 |
| Monchique Ypres | Central European Time | -01:00 |
| Monchique Yeniçiftlik | Turkey Time | -02:00 |
| Monchique Yenifoça | Turkey Time | -02:00 |
| Monchique Yenda | Eastern Australia Time | -09:00 |
| Monchique Yermo | Pacific Time | 08:00 |
| Monchique Yeroskipou | Eastern European Time | -02:00 |
| Monchique Yodogawa Ward | Japan Time | -08:00 |