| Sedro-Woolley Farthinghoe | United Kingdom Time | -08:00 |
| Sedro-Woolley East Angus | Eastern Time | -03:00 |
| Sedro-Woolley East Aurora | Eastern Time | -03:00 |
| Sedro-Woolley Earlston | United Kingdom Time | -08:00 |
| Sedro-Woolley Earlton | Eastern Time | -03:00 |
| Sedro-Woolley Easebourne | United Kingdom Time | -08:00 |
| Sedro-Woolley Earley | United Kingdom Time | -08:00 |
| Sedro-Woolley East Gwillimbury | Eastern Time | -03:00 |
| Sedro-Woolley East Hampton | Eastern Time | -03:00 |
| Sedro-Woolley East Greenwich | Eastern Time | -03:00 |
| Sedro-Woolley Dwingeloo | Central European Time | -09:00 |
| Sedro-Woolley Düsseldorf | Central European Time | -09:00 |
| Sedro-Woolley Durgi | India Standard Time | -12:30 |
| Sedro-Woolley Daylesford | Eastern Australia Time | -17:00 |
| Sedro-Woolley Darwin City | Central Australia Time | -16:30 |
| Sedro-Woolley Darlinghurst | Eastern Australia Time | -17:00 |
| Sedro-Woolley Darlington | Eastern Australia Time | -17:00 |
| Sedro-Woolley Dartington | United Kingdom Time | -08:00 |
| Sedro-Woolley Dartmouth | Eastern Time | -03:00 |
| Sedro-Woolley Davangere | India Standard Time | -12:30 |
| Sedro-Woolley Davao City | Philippine Time | -15:00 |
| Sedro-Woolley Dawalwadi | India Standard Time | -12:30 |
| Sedro-Woolley Davidson | Eastern Time | -03:00 |
| Sedro-Woolley David | Eastern Time | -02:00 |
| Sedro-Woolley David City | Central Time | -02:00 |
| Sedro-Woolley Davos | Central European Time | -09:00 |
| Sedro-Woolley Dardanelle | Central Time | -02:00 |
| Sedro-Woolley Darch | Western Australia Time | -15:00 |
| Sedro-Woolley Darasaguppe | India Standard Time | -12:30 |
| Sedro-Woolley Dapto | Eastern Australia Time | -17:00 |
| Sedro-Woolley Colònia de Sant Jordi | Central European Time | -09:00 |
| Sedro-Woolley Colp | Central Time | -02:00 |
| Sedro-Woolley Columbia Falls | Mountain Time | -01:00 |
| Sedro-Woolley Cologna Veneta | Central European Time | -09:00 |
| Sedro-Woolley Cologne | Central European Time | -09:00 |
| Sedro-Woolley Colombo | India Standard Time | -12:30 |
| Sedro-Woolley Coloncito | Eastern Time | -02:00 |
| Sedro-Woolley Colonel Light Gardens | Central Australia Time | -16:30 |