| Katsina Oviglio | Central European Time | -01:00 |
| Katsina Oulton | United Kingdom Time | 00:00 |
| Katsina Ouled Teima Amzou | Western European Time | 00:00 |
| Katsina Ouled Fares | Central European Time | 00:00 |
| Katsina Oud-Heverlee | Central European Time | -01:00 |
| Katsina Oud-Turnhout | Central European Time | -01:00 |
| Katsina Otompan | Central Time | 06:00 |
| Katsina Otopeni | Eastern European Time | -02:00 |
| Katsina Ottignies-Louvain-la-Neuve | Central European Time | -01:00 |
| Katsina Ottawa | Eastern Time | 05:00 |
| Katsina Oberwesel | Central European Time | -01:00 |
| Katsina Ota | Japan Time | -08:00 |
| Katsina Othello | Pacific Time | 08:00 |
| Katsina Otočec | Central European Time | -01:00 |
| Katsina Yorktown Heights | Eastern Time | 05:00 |
| Katsina Yoxford | United Kingdom Time | 00:00 |
| Katsina Ypres | Central European Time | -01:00 |
| Katsina Yoshinogari | Japan Time | -08:00 |
| Katsina Youngsville | Central Time | 06:00 |
| Katsina Yountville | Pacific Time | 08:00 |
| Katsina Yodogawa Ward | Japan Time | -08:00 |
| Katsina Yeniçiftlik | Turkey Time | -02:00 |
| Katsina Yenifoça | Turkey Time | -02:00 |
| Katsina Yenda | Eastern Australia Time | -09:00 |
| Katsina Yermo | Pacific Time | 08:00 |
| Katsina Yeroskipou | Eastern European Time | -02:00 |
| Katsina Waupaca | Central Time | 06:00 |
| Katsina Wattwil | Central European Time | -01:00 |
| Katsina Wauchope | Eastern Australia Time | -09:00 |
| Katsina Wavre | Central European Time | -01:00 |
| Katsina Waverley | Eastern Australia Time | -09:00 |
| Katsina Wayne | Eastern Time | 05:00 |
| Katsina Waynesville | Eastern Time | 05:00 |
| Katsina Wayville | Central Australia Time | -08:30 |
| Katsina Wayzata | Central Time | 06:00 |
| Katsina Weaverville | Pacific Time | 08:00 |
| Katsina Webbers Falls | Central Time | 06:00 |
| Katsina Webster | Central Time | 06:00 |