| Summerside Montville | Eastern Time | 01:00 |
| Summerside Siheung-si | Korean Time | -12:00 |
| Summerside Tauriac | Central European Time | -05:00 |
| Summerside Wisconsin Dells | Central Time | 02:00 |
| Summerside Ostermundigen | Central European Time | -05:00 |
| Summerside Silveira | Western European Time | -04:00 |
| Summerside Beresford | Atlantic Time | 00:00 |
| Summerside Squamish | Pacific Time | 04:00 |
| Summerside Montville | Eastern Australia Time | -13:00 |
| Summerside Sikkarimedu | India Standard Time | -08:30 |
| Summerside Tauriano | Central European Time | -05:00 |
| Summerside Wirksworth | United Kingdom Time | -04:00 |
| Summerside Osterwasser | Central European Time | -05:00 |
| Summerside Sikardarpur | India Standard Time | -08:30 |
| Summerside Berg | Central European Time | -05:00 |
| Summerside Springvale South | Eastern Australia Time | -13:00 |
| Summerside Medina | Western Australia Time | -11:00 |
| Summerside Silay City | Philippine Time | -11:00 |
| Summerside Tavanur | India Standard Time | -08:30 |
| Summerside Wirsberg | Central European Time | -05:00 |
| Summerside Oromocto | Atlantic Time | 00:00 |
| Summerside Tuggerah | Eastern Australia Time | -13:00 |
| Summerside Bergem | Central European Time | -05:00 |
| Summerside Srimushnam | India Standard Time | -08:30 |
| Summerside Medzhybizh | Eastern European Time | -06:00 |
| Summerside Tullamarine | Eastern Australia Time | -13:00 |
| Summerside Zermatt | Central European Time | -05:00 |
| Summerside Vitthalapur | India Standard Time | -08:30 |
| Summerside Orono | Central Time | 02:00 |
| Summerside Tullamore | Ireland Time | -04:00 |
| Summerside Bergen | Central European Time | -05:00 |
| Summerside Sri Aman | Malaysia Time | -11:00 |
| Summerside Meerhout | Central European Time | -05:00 |
| Summerside Tulum | Eastern Time | 02:00 |
| Summerside Zephyr | Eastern Time | 01:00 |
| Summerside Voorhees Township | Eastern Time | 01:00 |
| Summerside Ormond | Eastern Australia Time | -13:00 |
| Summerside Tunkhannock | Eastern Time | 01:00 |
| Summerside Berea | South Africa Standard Time | -05:00 |
| Summerside Srikalahasti | India Standard Time | -08:30 |
| Summerside Moraira | Central European Time | -05:00 |
| Summerside Tunis | Eastern Time | 01:00 |
| Summerside Zephyrhills | Eastern Time | 01:00 |
| Summerside Volterra | Central European Time | -05:00 |
| Summerside Orleans | Eastern Time | 01:00 |
| Summerside Vilanova del Camí | Central European Time | -05:00 |
| Summerside Bensalem | Eastern Time | 01:00 |
| Summerside Sicamous | Pacific Time | 04:00 |
| Summerside Moraitika | Eastern European Time | -06:00 |
| Summerside Vila Nova de Famalicão | Western European Time | -04:00 |