| Ibadan Story City | Central Time | 06:00 |
| Ibadan Stonington | Eastern Time | 05:00 |
| Ibadan Stony Plain | Mountain Time | 07:00 |
| Ibadan Stonyfell | Central Australia Time | -08:30 |
| Ibadan Street | United Kingdom Time | 00:00 |
| Ibadan Strassen | Central European Time | -01:00 |
| Ibadan Stratham | Eastern Time | 05:00 |
| Ibadan Strangford | United Kingdom Time | 00:00 |
| Ibadan Strasburg | Eastern Time | 05:00 |
| Ibadan Strömstad | Central European Time | -01:00 |
| Ibadan Střílky | Central European Time | -01:00 |
| Ibadan Stroudsburg | Eastern Time | 05:00 |
| Ibadan Sturbridge | Eastern Time | 05:00 |
| Ibadan Sturgis | Mountain Time | 07:00 |
| Ibadan Štúrovo | Central European Time | -01:00 |
| Ibadan Subang | Western Indonesia Time | -06:00 |
| Ibadan Subiaco | Western Australia Time | -07:00 |
| Ibadan Suan Dok | Indochina Time | -06:00 |
| Ibadan Stuttgart | Central Time | 06:00 |
| Ibadan Stutzheim-Offenheim | Central European Time | -01:00 |
| Ibadan Silveira | Western European Time | 00:00 |
| Ibadan Silverton | Pacific Time | 08:00 |
| Ibadan Silay City | Philippine Time | -07:00 |
| Ibadan Sinaia | Eastern European Time | -02:00 |
| Ibadan Stevensville | Eastern Time | 05:00 |
| Ibadan Stewiacke | Atlantic Time | 04:00 |
| Ibadan Simrishamn N | Central European Time | -01:00 |
| Ibadan Simpang Ampat | Malaysia Time | -07:00 |
| Ibadan Simpang Renggam | Malaysia Time | -07:00 |
| Ibadan Stone Harbor | Eastern Time | 05:00 |
| Ibadan Stone Mountain | Eastern Time | 05:00 |
| Ibadan Stonegate | United Kingdom Time | 00:00 |
| Ibadan Stirling | Mountain Time | 07:00 |
| Ibadan Stilton | United Kingdom Time | 00:00 |
| Ibadan Zahara de los Atunes | Central European Time | -01:00 |
| Ibadan Yvoir | Central European Time | -01:00 |
| Ibadan Yzeure | Central European Time | -01:00 |
| Ibadan Zachary | Central Time | 06:00 |