| Middlesex Werlte | Central European Time | -06:00 |
| Middlesex Stutzheim-Offenheim | Central European Time | -06:00 |
| Middlesex Yermo | Pacific Time | 03:00 |
| Middlesex Subiaco | Western Australia Time | -13:00 |
| Middlesex Yeroskipou | Eastern European Time | -07:00 |
| Middlesex Strafford | Eastern Time | 00:00 |
| Middlesex Strangford | United Kingdom Time | -05:00 |
| Middlesex Strassen | Central European Time | -06:00 |
| Middlesex Strasburg | Eastern Time | 00:00 |
| Middlesex Story City | Central Time | 01:00 |
| Middlesex Stowe | Eastern Time | 00:00 |
| Middlesex Střílky | Central European Time | -06:00 |
| Middlesex Strömstad | Central European Time | -06:00 |
| Middlesex Street | United Kingdom Time | -05:00 |
| Middlesex Stratham | Eastern Time | 00:00 |
| Middlesex Stilton | United Kingdom Time | -05:00 |
| Middlesex Sinaia | Eastern European Time | -07:00 |
| Middlesex Stevensville | Eastern Time | 00:00 |
| Middlesex Stewiacke | Atlantic Time | -01:00 |
| Middlesex Stirling | Mountain Time | 02:00 |
| Middlesex Stonington | Eastern Time | 00:00 |
| Middlesex Stony Plain | Mountain Time | 02:00 |
| Middlesex Stonyfell | Central Australia Time | -15:30 |
| Middlesex Stone Harbor | Eastern Time | 00:00 |
| Middlesex Stone Mountain | Eastern Time | 00:00 |
| Middlesex Stonegate | United Kingdom Time | -05:00 |
| Middlesex Simpang Ampat | Malaysia Time | -13:00 |
| Middlesex Simrishamn N | Central European Time | -06:00 |
| Middlesex Simpang Renggam | Malaysia Time | -13:00 |
| Middlesex Silverton | Pacific Time | 03:00 |
| Middlesex Silveira | Western European Time | -05:00 |
| Middlesex Sikardarpur | India Standard Time | -10:30 |
| Middlesex Sikkarimedu | India Standard Time | -10:30 |
| Middlesex Silay City | Philippine Time | -13:00 |
| Middlesex Signal Mountain | Eastern Time | 00:00 |
| Middlesex Sigulda | Eastern European Time | -07:00 |
| Middlesex Siheung-si | Korean Time | -14:00 |
| Middlesex Sigatoka | Fiji Time | -17:00 |