| Killarney Williams | Mountain Time | 08:00 |
| Killarney Williamsburg | Eastern Time | 05:00 |
| Killarney Willaston | United Kingdom Time | 00:00 |
| Killarney Wilkesboro | Eastern Time | 05:00 |
| Killarney Wilkau-Haßlau | Central European Time | -01:00 |
| Killarney Wilbraham | Eastern Time | 05:00 |
| Killarney Wildau | Central European Time | -01:00 |
| Killarney Wilder | Eastern Time | 05:00 |
| Killarney Wilderswil | Central European Time | -01:00 |
| Killarney Wiesbaden | Central European Time | -01:00 |
| Killarney Wieselburg | Central European Time | -01:00 |
| Killarney Wildwood | Eastern Time | 05:00 |
| Killarney Veytaux | Central European Time | -01:00 |
| Killarney Vézelay | Central European Time | -01:00 |
| Killarney Via Stroppari (alta) | Central European Time | -01:00 |
| Killarney Vestal | Eastern Time | 05:00 |
| Killarney Vescovato | Central European Time | -01:00 |
| Killarney Victor | Eastern Time | 05:00 |
| Killarney Victor Harbor | Central Australia Time | -08:30 |
| Killarney Víctor Larco Herrera District | Peru Time | 06:00 |
| Killarney Vico del Gargano | Central European Time | -01:00 |
| Killarney Wickham | United Kingdom Time | 00:00 |
| Killarney Wickham Bishops | United Kingdom Time | 00:00 |
| Killarney Wicklow | Ireland Time | 00:00 |
| Killarney Widnau | Central European Time | -01:00 |
| Killarney Whitney | Central Time | 06:00 |
| Killarney Vicente López | Argentina Time | 04:00 |
| Killarney Victoria | Central European Time | -01:00 |
| Killarney Victoria Park | Western Australia Time | -07:00 |
| Killarney Victoria Point | Eastern Australia Time | -09:00 |
| Killarney Zephyr | Eastern Time | 05:00 |
| Killarney Zephyrhills | Eastern Time | 05:00 |
| Killarney Zanzibar Town | East Africa Time | -02:00 |
| Killarney Winchester | Eastern Time | 05:00 |
| Killarney Zandhoven | Central European Time | -01:00 |
| Killarney Zermatt | Central European Time | -01:00 |
| Killarney Zero Branco | Central European Time | -01:00 |
| Killarney Zeven | Central European Time | -01:00 |