April 2027
49 contests running this month. Names only at this zoom — tap a contest for its times, in your own clock or UTC. A contest running across midnight appears on every day it is on the air, with marking the days it continues into rather than starts. Days are UTC, so a contest opening 2200Z sits on the UTC date — which may be the evening before where you are.
| Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|
4 | 1 | 3 | 4 | 5 | 5 | 3 |
3 | 5 | 4 | 2 | 5 | 8 | 8 |
4 | 5 | 4 | 2 | 4 | 5 | 10
|
2 | 3 | 3 | 1 | 4 | 6 | 6 |
2 | 3 | 3 | 1 | 4 | 9 | 7 |
Every session in April 202749
Export this viewCSV
105 sessions across 49 contests; repeats share a row.
| Contest | Date | Start | End | Duration | Mode | Band | Sponsor | Starts in |
|---|---|---|---|---|---|---|---|---|
| CWops Test (CWT)18 sessions | 1h | CW | 160-6m | CWops | in 136 daysin 136 daysin 143 daysin 143 daysin 143 daysin 143 daysin 150 daysin 150 daysin 150 daysin 150 daysin 157 daysin 157 daysin 157 daysin 157 daysin 164 daysin 164 daysin 164 daysin 164 days | |||
| SARL 80 m QSO Party | 3h | SSB | 80m | SARL | in 137 days | |||
| SKCC Straight Key Sprint Europe (SKSE) | 2h | CW | 160-6m | Straight Key Century Club | in 137 days | |||
| NCCC FT4 Sprint (FT4 NS)5 sessions | 30m | FT8/FT4FT4 | 160-6m | Northern California Contest Club (NCCC) | in 137 daysin 144 daysin 151 daysin 158 daysin 165 days | |||
| NCCC RTTY Sprint (RTTY NS)5 sessions | 30m | RTTY | 160-15m | Northern California Contest Club (NCCC) | in 137 daysin 144 daysin 151 daysin 158 daysin 165 days | |||
| NCCC Sprint (NS)5 sessions | 30m | CW | 160-15m | Northern California Contest Club (NCCC) | in 137 daysin 144 daysin 151 daysin 158 daysin 165 days | |||
| K1USN Slow Speed Test (SST)9 sessions | 1h | CW | 160-10m | K1USN Radio Club | in 138 daysin 140 daysin 145 daysin 147 daysin 152 daysin 154 daysin 159 daysin 161 daysin 166 days | |||
| PODXS 070 Club New Member Jamboree | 23h 59m | DigitalPSK31 | 80-10m | PODXS 070 Club | in 138 days | |||
| SARL QRP Contest (Autumn leg) | 2h | SSBCW | 40m/ | SARL | in 139 days | |||
| Missouri QSO Party unverified2 sessions | 14h6h | SSBCWDigital | 160-70cm | Boeing Employees Amateur Radio Society-St. Louis | in 139 daysin 140 days | |||
| SP DX Contest | 23h 59m | SSBCW | 160-10m | PZK / SP DX Club | in 139 days | |||
| AGCW ZAP Merit Contest (ZMC) unverified4 sessions | 50m | CW | 80m | AGCW-DL | in 141 daysin 148 daysin 155 daysin 162 days | |||
| ARS Spartan Sprint | 2h | CW | 80-10m | Adventure Radio Society | in 141 days | |||
| ZL Autumn and Winter Sprints, CW4 sessions | 29m | CW | 80m | NZART | in 141 daysin 148 daysin 155 daysin 162 days | |||
| ZL Autumn and Winter Sprints, SSB4 sessions | 29m | SSB | 80m | NZART | in 141 daysin 148 daysin 155 daysin 162 days | |||
| ZL Autumn and Winter Sprints, FT44 sessions | 29m | FT8/FT4FT4 | 80m | NZART | in 141 daysin 148 daysin 155 daysin 162 days | |||
| A1Club Weekly Test (AWT)4 sessions | 1h 15m | CW | not recorded | A1 Club | in 143 daysin 150 daysin 157 daysin 164 days | |||
| VHF-UHF FT8 Activity: 144 MHz unverified | 4h | FT8/FT4 | 2m | QSO BANAT Association (YO2KQT) | in 143 days | |||
| Japan International DX Contest, CW | 30h | CW | 160-10m | JIDX Contest Committee | in 145 days | |||
| IG-RY World Wide RTTY Contest | 30h | RTTYRTTY 45.45 baud | 80-10m | Interest Group RTTY (IG-RY) | in 146 days | |||
| OK/OM DX Contest, SSB | 23h 59m | SSB | 160-10m | CRK / SARA | in 146 days | |||
| SKCC Weekend Sprintathon (WES) | 35h 59m | CW | 160-6m | Straight Key Century Club | in 146 days | |||
| New Mexico QSO Party | 12h | SSBCWDigitalFT8/FT4 | 160-2m | New Mexico QSO Party | in 146 days | |||
| Africa FT4 DX Contest | 3h | FT8/FT4FT4 | 80m/ | SARL | in 146 days | |||
| Georgia QSO Party2 sessions | 9h 59m | SSBCW | not recorded | Southeastern Contest Club and Southeast DX Club | in 146 daysin 147 days | |||
| ZS4 QSO Party | 1h | CWSSB | 40m | Sasolburg Amateur Radio Club | in 147 days | |||
| 4 States QRP Group Second Sunday Sprint (SSS) | 2h | CWSSBDigital | 160-10m | 4 States QRP Group | in 147 days | |||
| DARC RTTY-Kurzcontest | 1h 29m | RTTYRTTY 45.45 baud | 80m/ | DARC | in 149 days | |||
| VHF-UHF FT8 Activity: 432 MHz unverified | 4h | FT8/FT4 | 70cm | QSO BANAT Association (YO2KQT) | in 150 days | |||
| ES Open HF Championship | 3h 59m | CWSSB | 80m/ | ERAU | in 152 days | |||
| PACCdigi Contest | 23h 59m | RTTYFT8/FT4 | 160-10m | VERON | in 153 days | |||
| IARU Region 1 50 MHz MGM Contest | 24h | DigitalMGM (machine generated modes) | 6m | IARU Region 1 VHF+ Committee | in 153 days | |||
| Michigan QSO Party | 12h | SSBCW | 80-10m | Mad River Radio Club | in 153 days | |||
| Ontario QSO Party2 sessions | 9h8h | SSBCW | 160-2m | Contest Club Ontario | in 153 daysin 154 days | |||
| 9A Activity Contest | 5h | CWSSBFM | 6-23cm | HRS | in 153 days | |||
| ÖVSV VHF/UHF/Microwave Activity Contest | 6h | CWSSBAMFM | 6-3cm | ÖVSV | in 153 days | |||
| Quebec QSO Party | 10h 59m | SSBCW | 80-2m | Club Radio Amateur de l'Outaouais | in 154 days | |||
| World Amateur Radio Day Contest HF (RF-WD RH) | 59m | CWSSB | 80m | MRASZ | in 154 days | |||
| Amatőr rádiózás világnapja RF-WD URH | 59m | CWSSB | 2m | MRASZ | in 154 days | |||
| ARRL Rookie Roundup, SSB | 5h 59m | SSB | 80-10m | ARRL | in 154 days | |||
| VHF-UHF FT8 Activity: 1296 MHz unverified | 4h | DigitalFT8 | 23cm | QSO BANAT Association (YO2KQT) | in 157 days | |||
| ALL JA Contest can't enter | 24h | CWSSBFMAM | 160-6m | JARL | in 160 days | |||
| SP DX RTTY Contest | 24h | RTTY | 80-10m | PK RVG | in 160 days | |||
| UK/EI DX Contest, CW | 24h | CW | 80-10m | UK/EI Contest Club | in 160 days | |||
| Helvetia Contest | 23h 59m | CWSSBRTTYDigitalFT8/FT4PSK31, PSK63 | 160-10m | USKA | in 160 days | |||
| SARL Saturday 40 m Club Contest can't enter | 1h | SSBCWRTTY | 40m | SARL | in 160 days | |||
| Florida QSO Party2 sessions | 9h 59m | SSBCW | 40-10m | Florida Contest Group | in 160 daysin 161 days | |||
| BARTG Sprint75 Contest | 3h 59m | RTTYRTTY 75 baud | 80-10m | BARTG | in 161 days | |||
| SKCC Straight Key Sprint (SKS) | 2h | CW | 160-6m | Straight Key Century Club | in 163 days |
CWops Test (CWT)
- → · 1hin 136 days
- → · 1hin 136 days
- → · 1hin 143 days
- → · 1hin 143 days
- → · 1hin 143 days
- → · 1hin 143 days
- → · 1hin 150 days
- → · 1hin 150 days
- → · 1hin 150 days
- → · 1hin 150 days
- → · 1hin 157 days
- → · 1hin 157 days
- → · 1hin 157 days
- → · 1hin 157 days
- → · 1hin 164 days
- → · 1hin 164 days
- → · 1hin 164 days
- → · 1hin 164 days
SARL 80 m QSO Party
- → · 3hin 137 days
SKCC Straight Key Sprint Europe (SKSE)
- → · 2hin 137 days
NCCC FT4 Sprint (FT4 NS)
- → · 30min 137 days
- → · 30min 144 days
- → · 30min 151 days
- → · 30min 158 days
- → · 30min 165 days
NCCC RTTY Sprint (RTTY NS)
- → · 30min 137 days
- → · 30min 144 days
- → · 30min 151 days
- → · 30min 158 days
- → · 30min 165 days
NCCC Sprint (NS)
- → · 30min 137 days
- → · 30min 144 days
- → · 30min 151 days
- → · 30min 158 days
- → · 30min 165 days
K1USN Slow Speed Test (SST)
- → · 1hin 138 days
- → · 1hin 140 days
- → · 1hin 145 days
- → · 1hin 147 days
- → · 1hin 152 days
- → · 1hin 154 days
- → · 1hin 159 days
- → · 1hin 161 days
- → · 1hin 166 days
PODXS 070 Club New Member Jamboree
- → · 23h 59min 138 days
SARL QRP Contest (Autumn leg)
- → · 2hin 139 days
Missouri QSO Party unverified
- → · 14hin 139 days
- → · 6hin 140 days
SP DX Contest
- → · 23h 59min 139 days
AGCW ZAP Merit Contest (ZMC) unverified
- → · 50min 141 days
- → · 50min 148 days
- → · 50min 155 days
- → · 50min 162 days
ARS Spartan Sprint
- → · 2hin 141 days
ZL Autumn and Winter Sprints, CW
- → · 29min 141 days
- → · 29min 148 days
- → · 29min 155 days
- → · 29min 162 days
ZL Autumn and Winter Sprints, SSB
- → · 29min 141 days
- → · 29min 148 days
- → · 29min 155 days
- → · 29min 162 days
ZL Autumn and Winter Sprints, FT4
- → · 29min 141 days
- → · 29min 148 days
- → · 29min 155 days
- → · 29min 162 days
A1Club Weekly Test (AWT)
- → · 1h 15min 143 days
- → · 1h 15min 150 days
- → · 1h 15min 157 days
- → · 1h 15min 164 days
VHF-UHF FT8 Activity: 144 MHz unverified
- → · 4hin 143 days
Japan International DX Contest, CW
- → · 30hin 145 days
IG-RY World Wide RTTY Contest
- → · 30hin 146 days
OK/OM DX Contest, SSB
- → · 23h 59min 146 days
SKCC Weekend Sprintathon (WES)
- → · 35h 59min 146 days
New Mexico QSO Party
- → · 12hin 146 days
Africa FT4 DX Contest
- → · 3hin 146 days
Georgia QSO Party
- → · 9h 59min 146 days
- → · 9h 59min 147 days
ZS4 QSO Party
- → · 1hin 147 days
4 States QRP Group Second Sunday Sprint (SSS)
- → · 2hin 147 days
DARC RTTY-Kurzcontest
- → · 1h 29min 149 days
VHF-UHF FT8 Activity: 432 MHz unverified
- → · 4hin 150 days
ES Open HF Championship
- → · 3h 59min 152 days
PACCdigi Contest
- → · 23h 59min 153 days
IARU Region 1 50 MHz MGM Contest
- → · 24hin 153 days
Michigan QSO Party
- → · 12hin 153 days
Ontario QSO Party
- → · 9hin 153 days
- → · 8hin 154 days
9A Activity Contest
- → · 5hin 153 days
ÖVSV VHF/UHF/Microwave Activity Contest
- → · 6hin 153 days
Quebec QSO Party
- → · 10h 59min 154 days
World Amateur Radio Day Contest HF (RF-WD RH)
- → · 59min 154 days
Amatőr rádiózás világnapja RF-WD URH
- → · 59min 154 days
ARRL Rookie Roundup, SSB
- → · 5h 59min 154 days
VHF-UHF FT8 Activity: 1296 MHz unverified
- → · 4hin 157 days
ALL JA Contest can't enter
- → · 24hin 160 days
SP DX RTTY Contest
- → · 24hin 160 days
UK/EI DX Contest, CW
- → · 24hin 160 days
Helvetia Contest
- → · 23h 59min 160 days
SARL Saturday 40 m Club Contest can't enter
- → · 1hin 160 days
Florida QSO Party
- → · 9h 59min 160 days
- → · 9h 59min 161 days
BARTG Sprint75 Contest
- → · 3h 59min 161 days
SKCC Straight Key Sprint (SKS)
- → · 2hin 163 days