| Siegen Raf Raf | Central European Time | 00:00 |
| Siegen Radoľa | Central European Time | 00:00 |
| Siegen Rahim Yar Khan | Pakistan Time | -04:00 |
| Siegen Rahovic | Central European Time | 00:00 |
| Siegen Raglan | New Zealand Time | -12:00 |
| Siegen Rafah | Eastern European Time | -01:00 |
| Siegen Pontresina | Central European Time | 00:00 |
| Siegen Pontian District | Malaysia Time | -07:00 |
| Siegen Ponte Tresa | Central European Time | 00:00 |
| Siegen Radda in Chianti | Central European Time | 00:00 |
| Siegen Rạch Giá | Indochina Time | -06:00 |
| Siegen Rạch Giá | Indochina Time | -06:00 |
| Siegen Rossett | United Kingdom Time | 01:00 |
| Siegen Roslyn | Eastern Time | 06:00 |
| Siegen Roslyn Heights | Eastern Time | 06:00 |
| Siegen Ross-on-Wye | United Kingdom Time | 01:00 |
| Siegen Rosemount | Eastern Australia Time | -09:00 |
| Siegen Rosendal | Central European Time | 00:00 |
| Siegen Rosendale | Eastern Time | 06:00 |
| Siegen Roncq | Central European Time | 00:00 |
| Siegen Roppenheim | Central European Time | 00:00 |
| Siegen Roquebrune-Cap-Martin | Central European Time | 00:00 |
| Siegen Rontana | Central European Time | 00:00 |
| Siegen Rosebery | Eastern Australia Time | -10:00 |
| Siegen Rosebud | Eastern Australia Time | -10:00 |
| Siegen Rosário | Brasilia Time | 04:00 |
| Siegen Rosemère | Eastern Time | 06:00 |
| Siegen Rosemont | Central Time | 07:00 |
| Siegen Romano D'ezzelino | Central European Time | 00:00 |
| Siegen Romanel-sur-Lausanne | Central European Time | 00:00 |
| Siegen Rakovica | Central European Time | 00:00 |
| Siegen Ram Nagar | India Standard Time | -04:30 |
| Siegen Rolling Hills Estates | Pacific Time | 09:00 |
| Siegen Roma | Central Time | 07:00 |
| Siegen Rajapalayam | India Standard Time | -04:30 |
| Siegen Rajosana | India Standard Time | -04:30 |
| Siegen Rainsville | Central Time | 07:00 |
| Siegen Rajadewali | Pakistan Time | -04:00 |