| Langsa Subang | Western Indonesia Time | 00:00 |
| Langsa Subiaco | Western Australia Time | -01:00 |
| Langsa Suan Dok | Indochina Time | 00:00 |
| Langsa Stuttgart | Central Time | 12:00 |
| Langsa Stutzheim-Offenheim | Central European Time | 06:00 |
| Langsa Strafford | Eastern Time | 11:00 |
| Langsa Stowe | Eastern Time | 11:00 |
| Langsa Stratham | Eastern Time | 11:00 |
| Langsa Strangford | United Kingdom Time | 07:00 |
| Langsa Strasburg | Eastern Time | 11:00 |
| Langsa Street | United Kingdom Time | 07:00 |
| Langsa Strassen | Central European Time | 06:00 |
| Langsa Strömstad | Central European Time | 06:00 |
| Langsa Střílky | Central European Time | 06:00 |
| Langsa Stroudsburg | Eastern Time | 11:00 |
| Langsa Story City | Central Time | 12:00 |
| Langsa Stonington | Eastern Time | 11:00 |
| Langsa Stony Plain | Mountain Time | 13:00 |
| Langsa Stonyfell | Central Australia Time | -03:30 |
| Langsa Stone Harbor | Eastern Time | 11:00 |
| Langsa Stone Mountain | Eastern Time | 11:00 |
| Langsa Stonegate | United Kingdom Time | 07:00 |
| Langsa Sinaia | Eastern European Time | 05:00 |
| Langsa Stevensville | Eastern Time | 11:00 |
| Langsa Stewiacke | Atlantic Time | 10:00 |
| Langsa Stirling | Mountain Time | 13:00 |
| Langsa Stilton | United Kingdom Time | 07:00 |
| Langsa Simrishamn N | Central European Time | 06:00 |
| Langsa Simpang Ampat | Malaysia Time | -01:00 |
| Langsa Simpang Renggam | Malaysia Time | -01:00 |
| Langsa Silveira | Western European Time | 07:00 |
| Langsa Silverton | Pacific Time | 14:00 |
| Langsa Sikkarimedu | India Standard Time | 01:30 |
| Langsa Silay City | Philippine Time | -01:00 |
| Langsa Signal Mountain | Eastern Time | 11:00 |
| Langsa Sigulda | Eastern European Time | 05:00 |
| Langsa Siheung-si | Korean Time | -02:00 |
| Langsa Sikardarpur | India Standard Time | 01:30 |