| South Perth Azalea | Pacific Time | 16:00 |
| South Perth Sturgis | Mountain Time | 15:00 |
| South Perth Azambuja | Western European Time | 08:00 |
| South Perth Štúrovo | Central European Time | 07:00 |
| South Perth Suan Dok | Indochina Time | 01:00 |
| South Perth Stuttgart | Central Time | 14:00 |
| South Perth Stutzheim-Offenheim | Central European Time | 07:00 |
| South Perth Strafford | Eastern Time | 13:00 |
| South Perth Strangford | United Kingdom Time | 08:00 |
| South Perth Strasburg | Eastern Time | 13:00 |
| South Perth Strassen | Central European Time | 07:00 |
| South Perth Stratham | Eastern Time | 13:00 |
| South Perth Story City | Central Time | 14:00 |
| South Perth Stowe | Eastern Time | 13:00 |
| South Perth Stonington | Eastern Time | 13:00 |
| South Perth Stony Plain | Mountain Time | 15:00 |
| South Perth Stonyfell | Central Australia Time | -02:30 |
| South Perth Stone Harbor | Eastern Time | 13:00 |
| South Perth Stone Mountain | Eastern Time | 13:00 |
| South Perth Stonegate | United Kingdom Time | 08:00 |
| South Perth Simpang Ampat | Malaysia Time | 00:00 |
| South Perth Simpang Renggam | Malaysia Time | 00:00 |
| South Perth Simrishamn N | Central European Time | 07:00 |
| South Perth Sinaia | Eastern European Time | 06:00 |
| South Perth Stirling | Mountain Time | 15:00 |
| South Perth Stilton | United Kingdom Time | 08:00 |
| South Perth Stevensville | Eastern Time | 13:00 |
| South Perth Stewiacke | Atlantic Time | 12:00 |
| South Perth Siesta Key | Eastern Time | 13:00 |
| South Perth Signal Mountain | Eastern Time | 13:00 |
| South Perth Sigatoka | Fiji Time | -05:00 |
| South Perth Sikkarimedu | India Standard Time | 02:30 |
| South Perth Sikardarpur | India Standard Time | 02:30 |
| South Perth Sigulda | Eastern European Time | 06:00 |
| South Perth Siheung-si | Korean Time | -01:00 |
| South Perth Silverton | Pacific Time | 16:00 |
| South Perth Silveira | Western European Time | 08:00 |
| South Perth Silay City | Philippine Time | 00:00 |