| World Time Zone Challenge | ||
| Status: | Active | |
| Geographic Focus: | Worldwide | |
| Participation: | Worldwide | |
| Mode: | CW, SSB | |
| Bands: | 160, 80, 40, 20, 15, 10m | |
| Classes: | Single Op (CW/SSB/Mixed) (QRP/Low/High) | |
| Max power: | HP: >100 watts LP: 100 watts QRP: 20 watts | |
| Exchange: | RS(T) + TZ offset code | |
| Work stations: | Once per band per mode | |
| QSO Points: | (see rules) | |
| Multipliers: | Each TZ offset code once per band Bonus mults: (see rules) | |
| Score Calculation: | Total score = total QSO points x total mults | |
| E-mail logs to: | (none) | |
| Upload log at: | https://wtzc-contest.com/upload | |
| Mail logs to: | (none) | |
| Find rules at: | https://wtzc-contest.com/rules | |
| Cabrillo name: | WTZC | |
| Cabrillo name aliases: | ||
| Future Dates | |||
| 1200Z, Apr 18 to 1200Z, Apr 19, 2026 | Logs due: 1200Z, Apr 26 | ||
| 1200Z, Apr 17 to 1200Z, Apr 18, 2027 | |||
| 1200Z, Apr 15 to 1200Z, Apr 16, 2028 | |||
| 1200Z, Apr 21 to 1200Z, Apr 22, 2029 | |||
| 1200Z, Apr 20 to 1200Z, Apr 21, 2030 | |||
| 1200Z, Apr 19 to 1200Z, Apr 20, 2031 | |||
| Historical Dates | |||