Contest Calendar¶
Updated 21:00 UTC 2026-05-23
Next 30 Days¶
CQ WPX CW¶
6 days until start
| Start | 2026-05-30 00:00 UTC |
| End | 2026-06-01 00:00 UTC |
| Duration | 48 hours |
| Modes | CW |
| Bands | 160m, 80m, 40m, 20m, 15m, 10m |
| Sponsor | CQ |
Prefix multiplier contest — CW worldwide
All Asian DX CW¶
3w 6d until start
| Start | 2026-06-20 00:00 UTC |
| End | 2026-06-22 00:00 UTC |
| Duration | 48 hours |
| Modes | CW |
| Bands | 160m, 80m, 40m, 20m, 15m, 10m |
| Sponsor | JARL |
All Asian DX — CW, Asian stations work the world
Full Year Calendar¶
| Contest | Date (UTC) | Start | Hours | Modes | Countdown |
|---|---|---|---|---|---|
| CQ WPX CW | May 30–01 | Sat 00:00 | 48 | CW | 6 days |
| All Asian DX CW | Jun 20–22 | Sat 00:00 | 48 | CW | 3w 6d |
| IARU HF Championship | Jul 11–12 | Sat 12:00 | 24 | SSB/CW | 6w 6d |
| WAE CW | Aug 08–10 | Sat 00:00 | 48 | CW | 10w 6d |
| All Asian DX SSB | Sep 05–07 | Sat 00:00 | 48 | SSB | 14w 6d |
| WAE SSB | Sep 12–14 | Sat 00:00 | 48 | SSB | 15w 6d |
| SAC CW | Sep 19–20 | Sat 12:00 | 24 | CW | 16w 6d |
| CQ WW RTTY | Sep 26–28 | Sat 00:00 | 48 | RTTY | 17w 6d |
| Oceania DX SSB | Oct 03–04 | Sat 06:00 | 24 | SSB | 18w 6d |
| Oceania DX CW | Oct 10–11 | Sat 06:00 | 24 | CW | 19w 6d |
| SAC SSB | Oct 17–18 | Sat 12:00 | 24 | SSB | 20w 6d |
| CQ WW SSB | Oct 24–26 | Sat 00:00 | 48 | SSB | 21w 6d |
| WAE RTTY | Nov 14–16 | Sat 00:00 | 48 | RTTY | 24w 6d |
| JIDX SSB | Nov 14–15 | Sat 07:00 | 30 | SSB | 24w 6d |
| CQ WW CW | Nov 28–30 | Sat 00:00 | 48 | CW | 26w 6d |
| ARRL 160m | Dec 04–06 | Fri 22:00 | 42 | CW | 27w 6d |
| ARRL 10m | Dec 12–14 | Sat 00:00 | 48 | SSB/CW | 28w 6d |
| CQ 160m CW | Jan 29–31 | Fri 22:00 | 48 | CW | 35w 6d |
| CQ WPX RTTY | Feb 13–15 | Sat 00:00 | 48 | RTTY | 37w 6d |
| ARRL DX CW | Feb 20–22 | Sat 00:00 | 48 | CW | 38w 6d |
| CQ 160m SSB | Feb 26–28 | Fri 22:00 | 48 | SSB | 39w 6d |
| ARRL DX SSB | Mar 06–08 | Sat 00:00 | 48 | SSB | 40w 6d |
| CQ WPX SSB | Mar 27–29 | Sat 00:00 | 48 | SSB | 43w 6d |
| JIDX CW | Apr 10–11 | Sat 07:00 | 30 | CW | 45w 6d |
Contest Weekend Recaps¶
Post-contest propagation analysis — band activity, solar impact, geographic reach. Each recap includes a full Jupyter notebook and downloadable SQLite dataset.
- ARRL DX SSB 2026 — Storm onset during contest (Kp 1.0 → 4.67)
- ARRL DX CW 2026 — SSN dropped to zero during G1 storm
DXpeditions¶
See the DXpeditions page for upcoming DXpedition tracking with IONIS band predictions.
Logger Statistics¶
Which logging software do contesters use? See the Logger Statistics page for market share data from 496K+ Cabrillo log submissions — N1MM dominates at 45%, but macOS and Linux have essentially zero contest logger presence.
About This Calendar¶
Contest dates are computed from fixed scheduling rules — "last full weekend of October," "first full weekend of March," etc. The rules rarely change. A YAML file plus Python date math produces a calendar that stays current without manual updates.
"Full weekend" means both Saturday and Sunday fall within the named month. Some contests start Friday evening (CQ 160m, ARRL 160m). Durations range from 24 hours (IARU, SAC, Oceania) to 48 hours (CQ WW, WPX).
Predictions use IONIS V22-gamma — a physics-constrained neural network trained on 14 billion real propagation observations. They reflect current solar conditions and update every 3 hours.