April 2100

← March This month May → DXpeditions

46 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.

Contests in April 2100, by day
Mon	Tue	Wed	Thu	Fri	Sat	Sun
293 AGCW ZAP Merit Contest (ZMC) K1USN Slow Speed Test (SST) continues: SARL Equinox 6m African DX Entity Challenge (March)	301 continues: SARL Equinox 6m African DX Entity Challenge (March)	313 A1Club Weekly Test (AWT) CWops Test (CWT)×2 (2 sessions) continues: SARL Equinox 6m African DX Entity Challenge (March)	14 CWops Test (CWT)×2 (2 sessions) SARL 80 m QSO Party SKCC Straight Key Sprint Europe (SKSE) continues: SARL Equinox 6m African DX Entity Challenge (March)	25 K1USN Slow Speed Test (SST) NCCC FT4 Sprint (FT4 NS) NCCC RTTY Sprint (RTTY NS) NCCC Sprint (NS) continues: SARL Equinox 6m African DX Entity Challenge (March)	34 PODXS 070 Club New Member Jamboree SARL QRP Contest (Autumn leg) SP DX Contest continues: SARL Equinox 6m African DX Entity Challenge (March)	42 continues: SARL Equinox 6m African DX Entity Challenge (March) continues: SP DX Contest
53 AGCW ZAP Merit Contest (ZMC) K1USN Slow Speed Test (SST) continues: SARL Equinox 6m African DX Entity Challenge (March)	65 ARS Spartan Sprint ZL Autumn and Winter Sprints, CW ZL Autumn and Winter Sprints, FT4 ZL Autumn and Winter Sprints, SSB continues: SARL Equinox 6m African DX Entity Challenge (March)	74 A1Club Weekly Test (AWT) CWops Test (CWT)×2 (2 sessions) VHF-UHF FT8 Activity: 144 MHz continues: SARL Equinox 6m African DX Entity Challenge (March)	82 CWops Test (CWT)×2 (2 sessions) continues: SARL Equinox 6m African DX Entity Challenge (March)	95 K1USN Slow Speed Test (SST) NCCC FT4 Sprint (FT4 NS) NCCC RTTY Sprint (RTTY NS) NCCC Sprint (NS) continues: SARL Equinox 6m African DX Entity Challenge (March)	108 Africa FT4 DX Contest Georgia QSO Party IG-RY World Wide RTTY Contest Japan International DX Contest, CW New Mexico QSO Party OK/OM DX Contest, SSB SKCC Weekend Sprintathon (WES) continues: SARL Equinox 6m African DX Entity Challenge (March)	118 Georgia QSO Party×2 (2 sessions) ZS4 QSO Party continues: IG-RY World Wide RTTY Contest continues: Japan International DX Contest, CW continues: New Mexico QSO Party continues: OK/OM DX Contest, SSB continues: SARL Equinox 6m African DX Entity Challenge (March) continues: SKCC Weekend Sprintathon (WES)
124 4 States QRP Group Second Sunday Sprint (SSS) AGCW ZAP Merit Contest (ZMC) K1USN Slow Speed Test (SST) continues: SARL Equinox 6m African DX Entity Challenge (March)	135 DARC RTTY-Kurzcontest ZL Autumn and Winter Sprints, CW ZL Autumn and Winter Sprints, FT4 ZL Autumn and Winter Sprints, SSB continues: SARL Equinox 6m African DX Entity Challenge (March)	144 A1Club Weekly Test (AWT) CWops Test (CWT)×2 (2 sessions) VHF-UHF FT8 Activity: 432 MHz continues: SARL Equinox 6m African DX Entity Challenge (March)	152 CWops Test (CWT)×2 (2 sessions) continues: SARL Equinox 6m African DX Entity Challenge (March)	164 K1USN Slow Speed Test (SST) NCCC FT4 Sprint (FT4 NS) NCCC RTTY Sprint (RTTY NS) NCCC Sprint (NS)	174 ES Open HF Championship IARU Region 1 50 MHz MGM Contest Michigan QSO Party Ontario QSO Party	189 9A Activity Contest ARRL Rookie Roundup, SSB Amatőr rádiózás világnapja RF-WD URH Ontario QSO Party×2 (2 sessions) Quebec QSO Party World Amateur Radio Day Contest HF (RF-WD RH) ÖVSV VHF/UHF/Microwave Activity Contest continues: IARU Region 1 50 MHz MGM Contest continues: Michigan QSO Party
192 AGCW ZAP Merit Contest (ZMC) K1USN Slow Speed Test (SST)	203 ZL Autumn and Winter Sprints, CW ZL Autumn and Winter Sprints, FT4 ZL Autumn and Winter Sprints, SSB	213 A1Club Weekly Test (AWT) CWops Test (CWT)×2 (2 sessions) VHF-UHF FT8 Activity: 1296 MHz	221 CWops Test (CWT)×2 (2 sessions)	234 K1USN Slow Speed Test (SST) NCCC FT4 Sprint (FT4 NS) NCCC RTTY Sprint (RTTY NS) NCCC Sprint (NS)	245 ALL JA Contest Florida QSO Party Helvetia Contest SARL Saturday 40 m Club Contest SP DX RTTY Contest	255 BARTG Sprint75 Contest Florida QSO Party×2 (2 sessions) continues: ALL JA Contest continues: Helvetia Contest continues: SP DX RTTY Contest
262 AGCW ZAP Merit Contest (ZMC) K1USN Slow Speed Test (SST)	273 ZL Autumn and Winter Sprints, CW ZL Autumn and Winter Sprints, FT4 ZL Autumn and Winter Sprints, SSB	283 A1Club Weekly Test (AWT) CWops Test (CWT)×2 (2 sessions) SKCC Straight Key Sprint (SKS)	291 CWops Test (CWT)×2 (2 sessions)	304 K1USN Slow Speed Test (SST) NCCC FT4 Sprint (FT4 NS) NCCC RTTY Sprint (RTTY NS) NCCC Sprint (NS)	19 7th Call Area QSO Party AGCW QRP/QRP Party ARI International DX Contest All Austrian Exercise AOEE 80/40m×2 (2 sessions) Delaware QSO Party Harry Angel Memorial Sprint Indiana QSO Party New England QSO Party URH Magyar Kupa Rádióforgalmi Versenysorozat	27 AWA Valve SSB QSO Party New England QSO Party×2 (2 sessions) continues: 7th Call Area QSO Party continues: ARI International DX Contest continues: Delaware QSO Party continues: Indiana QSO Party continues: URH Magyar Kupa Rádióforgalmi Versenysorozat

Every session in April 210046

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101 sessions across 46 contests; repeats share a row.

Contests starting in April 2100
Contest	Date	Start	End	Duration	Mode	Band	Sponsor	Starts in
CWops Test (CWT)18 sessions	Thu 1 AprThu 1 AprWed 7 AprWed 7 AprThu 8 AprThu 8 AprWed 14 AprWed 14 AprThu 15 AprThu 15 AprWed 21 AprWed 21 AprThu 22 AprThu 22 AprWed 28 AprWed 28 AprThu 29 AprThu 29 Apr	0300Z0700Z1300Z1900Z0300Z0700Z1300Z1900Z0300Z0700Z1300Z1900Z0300Z0700Z1300Z1900Z0300Z0700Z	0400Z0800Z1400Z2000Z0400Z0800Z1400Z2000Z0400Z0800Z1400Z2000Z0400Z0800Z1400Z2000Z0400Z0800Z	1h	CW	160-6m	CWops	in 26818 daysin 26819 daysin 26825 daysin 26825 daysin 26825 daysin 26826 daysin 26832 daysin 26832 daysin 26832 daysin 26833 daysin 26839 daysin 26839 daysin 26839 daysin 26840 daysin 26846 daysin 26846 daysin 26846 daysin 26847 days
SARL 80 m QSO Party	Thu 1 Apr	1700Z	2000Z	3h	SSB	80m	SARL	in 26819 days
SKCC Straight Key Sprint Europe (SKSE)	Thu 1 Apr	1900Z	2100Z	2h	CW	160-6m	Straight Key Century Club	in 26819 days
NCCC FT4 Sprint (FT4 NS)5 sessions	Fri 2 AprFri 9 AprFri 16 AprFri 23 AprFri 30 Apr	0100Z0100Z0100Z0100Z0100Z	0130Z0130Z0130Z0130Z0130Z	30m	FT8/FT4FT4	160-6m	Northern California Contest Club (NCCC)	in 26819 daysin 26826 daysin 26833 daysin 26840 daysin 26847 days
NCCC RTTY Sprint (RTTY NS)5 sessions	Fri 2 AprFri 9 AprFri 16 AprFri 23 AprFri 30 Apr	0145Z0145Z0145Z0145Z0145Z	0215Z0215Z0215Z0215Z0215Z	30m	RTTY	160-15m	Northern California Contest Club (NCCC)	in 26819 daysin 26826 daysin 26833 daysin 26840 daysin 26847 days
NCCC Sprint (NS)5 sessions	Fri 2 AprFri 9 AprFri 16 AprFri 23 AprFri 30 Apr	0230Z0230Z0230Z0230Z0230Z	0300Z0300Z0300Z0300Z0300Z	30m	CW	160-15m	Northern California Contest Club (NCCC)	in 26819 daysin 26826 daysin 26833 daysin 26840 daysin 26847 days
K1USN Slow Speed Test (SST)9 sessions	Fri 2 AprMon 5 AprFri 9 AprMon 12 AprFri 16 AprMon 19 AprFri 23 AprMon 26 AprFri 30 Apr	2000Z0000Z2000Z0000Z2000Z0000Z2000Z0000Z2000Z	2100Z0100Z2100Z0100Z2100Z0100Z2100Z0100Z2100Z	1h	CW	160-10m	K1USN Radio Club	in 26820 daysin 26822 daysin 26827 daysin 26829 daysin 26834 daysin 26836 daysin 26841 daysin 26843 daysin 26848 days
PODXS 070 Club New Member Jamboree	Sat 3 Apr	0000Z	2359Z	23h 59m	DigitalPSK31	80-10m	PODXS 070 Club	in 26820 days
SARL QRP Contest (Autumn leg)	Sat 3 Apr	1330Z	1530Z	2h	SSBCW	40m/20m/10m	SARL	in 26821 days
SP DX Contest	Sat 3 Apr	1500Z	1459Z Sun 4 Apr	23h 59m	SSBCW	160-10m	PZK / SP DX Club	in 26821 days
AGCW ZAP Merit Contest (ZMC) unverified4 sessions	Mon 5 AprMon 12 AprMon 19 AprMon 26 Apr	1740Z1740Z1740Z1740Z	1830Z1830Z1830Z1830Z	50m	CW	80m	AGCW-DL	in 26823 daysin 26830 daysin 26837 daysin 26844 days
ARS Spartan Sprint	Tue 6 Apr	0000Z	0200Z	2h	CW	80-10m	Adventure Radio Society	in 26823 days
ZL Autumn and Winter Sprints, CW4 sessions	Tue 6 AprTue 13 AprTue 20 AprTue 27 Apr	0800Z0800Z0800Z0800Z	0829Z0829Z0829Z0829Z	29m	CW	80m	NZART	in 26824 daysin 26831 daysin 26838 daysin 26845 days
ZL Autumn and Winter Sprints, SSB4 sessions	Tue 6 AprTue 13 AprTue 20 AprTue 27 Apr	0830Z0830Z0830Z0830Z	0859Z0859Z0859Z0859Z	29m	SSB	80m	NZART	in 26824 daysin 26831 daysin 26838 daysin 26845 days
ZL Autumn and Winter Sprints, FT44 sessions	Tue 6 AprTue 13 AprTue 20 AprTue 27 Apr	0900Z0900Z0900Z0900Z	0929Z0929Z0929Z0929Z	29m	FT8/FT4FT4	80m	NZART	in 26824 daysin 26831 daysin 26838 daysin 26845 days
A1Club Weekly Test (AWT)4 sessions	Wed 7 AprWed 14 AprWed 21 AprWed 28 Apr	1145Z1145Z1145Z1145Z	1300Z1300Z1300Z1300Z	1h 15m	CW	not recorded	A1 Club	in 26825 daysin 26832 daysin 26839 daysin 26846 days
VHF-UHF FT8 Activity: 144 MHz unverified	Wed 7 Apr	1700Z	2100Z	4h	FT8/FT4	2m	QSO BANAT Association (YO2KQT)	in 26825 days
Japan International DX Contest, CW	Sat 10 Apr	0700Z	1300Z Sun 11 Apr	30h	CW	160-10m	JIDX Contest Committee	in 26828 days
IG-RY World Wide RTTY Contest	Sat 10 Apr	1200Z	1800Z Sun 11 Apr	30h	RTTYRTTY 45.45 baud	80-10m	Interest Group RTTY (IG-RY)	in 26828 days
OK/OM DX Contest, SSB	Sat 10 Apr	1200Z	1159Z Sun 11 Apr	23h 59m	SSB	160-10m	CRK / SARA	in 26828 days
SKCC Weekend Sprintathon (WES)	Sat 10 Apr	1200Z	2359Z Sun 11 Apr	35h 59m	CW	160-6m	Straight Key Century Club	in 26828 days
New Mexico QSO Party	Sat 10 Apr	1400Z	0200Z Sun 11 Apr	12h	SSBCWDigitalFT8/FT4	160-2m	New Mexico QSO Party	in 26828 days
Africa FT4 DX Contest	Sat 10 Apr	1500Z	1800Z	3h	FT8/FT4FT4	80m/40m/20m	SARL	in 26828 days
Georgia QSO Party2 sessions	Sat 10 AprSun 11 Apr	1800Z1400Z	0359Z Sun 11 Apr2359Z	9h 59m	SSBCW	not recorded	Southeastern Contest Club and Southeast DX Club	in 26828 daysin 26829 days
ZS4 QSO Party	Sun 11 Apr	1400Z	1500Z	1h	CWSSB	40m	Sasolburg Amateur Radio Club	in 26829 days
4 States QRP Group Second Sunday Sprint (SSS)	Mon 12 Apr	0000Z	0200Z	2h	CWSSBDigital	160-10m	4 States QRP Group	in 26829 days
DARC RTTY-Kurzcontest	Tue 13 Apr	1800Z	1929Z	1h 29m	RTTYRTTY 45.45 baud	80m/40m	DARC	in 26831 days
VHF-UHF FT8 Activity: 432 MHz unverified	Wed 14 Apr	1700Z	2100Z	4h	FT8/FT4	70cm	QSO BANAT Association (YO2KQT)	in 26832 days
ES Open HF Championship	Sat 17 Apr	0500Z	0859Z	3h 59m	CWSSB	80m/40m	ERAU	in 26834 days
IARU Region 1 50 MHz MGM Contest	Sat 17 Apr	1400Z	1400Z Sun 18 Apr	24h	DigitalMGM (machine generated modes)	6m	IARU Region 1 VHF+ Committee	in 26835 days
Michigan QSO Party	Sat 17 Apr	1600Z	0400Z Sun 18 Apr	12h	SSBCW	80-10m	Mad River Radio Club	in 26835 days
Ontario QSO Party2 sessions	Sat 17 AprSun 18 Apr	1800Z1200Z	0300Z Sun 18 Apr2000Z	9h8h	SSBCW	160-2m	Contest Club Ontario	in 26835 daysin 26836 days
9A Activity Contest	Sun 18 Apr	0700Z	1200Z	5h	CWSSBFM	6-23cm	HRS	in 26836 days
ÖVSV VHF/UHF/Microwave Activity Contest	Sun 18 Apr	0700Z	1300Z	6h	CWSSBAMFM	6-3cm	ÖVSV	in 26836 days
Quebec QSO Party	Sun 18 Apr	1300Z	2359Z	10h 59m	SSBCW	80-2m	Club Radio Amateur de l'Outaouais	in 26836 days
World Amateur Radio Day Contest HF (RF-WD RH)	Sun 18 Apr	1600Z	1659Z	59m	CWSSB	80m	MRASZ	in 26836 days
Amatőr rádiózás világnapja RF-WD URH	Sun 18 Apr	1730Z	1829Z	59m	CWSSB	2m	MRASZ	in 26836 days
ARRL Rookie Roundup, SSB	Sun 18 Apr	1800Z	2359Z	5h 59m	SSB	80-10m	ARRL	in 26836 days
VHF-UHF FT8 Activity: 1296 MHz unverified	Wed 21 Apr	1700Z	2100Z	4h	DigitalFT8	23cm	QSO BANAT Association (YO2KQT)	in 26839 days
ALL JA Contest can't enter	Sat 24 Apr	1200Z	1200Z Sun 25 Apr	24h	CWSSBFMAM	160-6m	JARL	in 26842 days
SP DX RTTY Contest	Sat 24 Apr	1200Z	1200Z Sun 25 Apr	24h	RTTY	80-10m	PK RVG	in 26842 days
Helvetia Contest	Sat 24 Apr	1300Z	1259Z Sun 25 Apr	23h 59m	CWSSBRTTYDigitalFT8/FT4PSK31, PSK63	160-10m	USKA	in 26842 days
SARL Saturday 40 m Club Contest can't enter	Sat 24 Apr	1500Z	1600Z	1h	SSBCWRTTY	40m	SARL	in 26842 days
Florida QSO Party2 sessions	Sat 24 AprSun 25 Apr	1600Z1200Z	0159Z Sun 25 Apr2159Z	9h 59m	SSBCW	40-10m	Florida Contest Group	in 26842 daysin 26843 days
BARTG Sprint75 Contest	Sun 25 Apr	1700Z	2059Z	3h 59m	RTTYRTTY 75 baud	80-10m	BARTG	in 26843 days
SKCC Straight Key Sprint (SKS)	Wed 28 Apr	0000Z	0200Z	2h	CW	160-6m	Straight Key Century Club	in 26845 days

CWops Test (CWT)
CW · 160-6m · CWops
- 0300Z Thu 1 Apr → 0400Z · 1hin 26818 days
- 0700Z Thu 1 Apr → 0800Z · 1hin 26819 days
- 1300Z Wed 7 Apr → 1400Z · 1hin 26825 days
- 1900Z Wed 7 Apr → 2000Z · 1hin 26825 days
- 0300Z Thu 8 Apr → 0400Z · 1hin 26825 days
- 0700Z Thu 8 Apr → 0800Z · 1hin 26826 days
- 1300Z Wed 14 Apr → 1400Z · 1hin 26832 days
- 1900Z Wed 14 Apr → 2000Z · 1hin 26832 days
- 0300Z Thu 15 Apr → 0400Z · 1hin 26832 days
- 0700Z Thu 15 Apr → 0800Z · 1hin 26833 days
- 1300Z Wed 21 Apr → 1400Z · 1hin 26839 days
- 1900Z Wed 21 Apr → 2000Z · 1hin 26839 days
- 0300Z Thu 22 Apr → 0400Z · 1hin 26839 days
- 0700Z Thu 22 Apr → 0800Z · 1hin 26840 days
- 1300Z Wed 28 Apr → 1400Z · 1hin 26846 days
- 1900Z Wed 28 Apr → 2000Z · 1hin 26846 days
- 0300Z Thu 29 Apr → 0400Z · 1hin 26846 days
- 0700Z Thu 29 Apr → 0800Z · 1hin 26847 days
SARL 80 m QSO Party
SSB · 80m · SARL
- 1700Z Thu 1 Apr → 2000Z · 3hin 26819 days
SKCC Straight Key Sprint Europe (SKSE)
CW · 160-6m · Straight Key Century Club
- 1900Z Thu 1 Apr → 2100Z · 2hin 26819 days
NCCC FT4 Sprint (FT4 NS)
FT8/FT4FT4 · 160-6m · Northern California Contest Club (NCCC)
- 0100Z Fri 2 Apr → 0130Z · 30min 26819 days
- 0100Z Fri 9 Apr → 0130Z · 30min 26826 days
- 0100Z Fri 16 Apr → 0130Z · 30min 26833 days
- 0100Z Fri 23 Apr → 0130Z · 30min 26840 days
- 0100Z Fri 30 Apr → 0130Z · 30min 26847 days
NCCC RTTY Sprint (RTTY NS)
RTTY · 160-15m · Northern California Contest Club (NCCC)
- 0145Z Fri 2 Apr → 0215Z · 30min 26819 days
- 0145Z Fri 9 Apr → 0215Z · 30min 26826 days
- 0145Z Fri 16 Apr → 0215Z · 30min 26833 days
- 0145Z Fri 23 Apr → 0215Z · 30min 26840 days
- 0145Z Fri 30 Apr → 0215Z · 30min 26847 days
NCCC Sprint (NS)
CW · 160-15m · Northern California Contest Club (NCCC)
- 0230Z Fri 2 Apr → 0300Z · 30min 26819 days
- 0230Z Fri 9 Apr → 0300Z · 30min 26826 days
- 0230Z Fri 16 Apr → 0300Z · 30min 26833 days
- 0230Z Fri 23 Apr → 0300Z · 30min 26840 days
- 0230Z Fri 30 Apr → 0300Z · 30min 26847 days
K1USN Slow Speed Test (SST)
CW · 160-10m · K1USN Radio Club
- 2000Z Fri 2 Apr → 2100Z · 1hin 26820 days
- 0000Z Mon 5 Apr → 0100Z · 1hin 26822 days
- 2000Z Fri 9 Apr → 2100Z · 1hin 26827 days
- 0000Z Mon 12 Apr → 0100Z · 1hin 26829 days
- 2000Z Fri 16 Apr → 2100Z · 1hin 26834 days
- 0000Z Mon 19 Apr → 0100Z · 1hin 26836 days
- 2000Z Fri 23 Apr → 2100Z · 1hin 26841 days
- 0000Z Mon 26 Apr → 0100Z · 1hin 26843 days
- 2000Z Fri 30 Apr → 2100Z · 1hin 26848 days
PODXS 070 Club New Member Jamboree
DigitalPSK31 · 80-10m · PODXS 070 Club
- 0000Z Sat 3 Apr → 2359Z · 23h 59min 26820 days
SARL QRP Contest (Autumn leg)
SSBCW · 40m/20m/10m · SARL
- 1330Z Sat 3 Apr → 1530Z · 2hin 26821 days
SP DX Contest
SSBCW · 160-10m · PZK / SP DX Club
- 1500Z Sat 3 Apr → 1459Z Sun 4 Apr · 23h 59min 26821 days
AGCW ZAP Merit Contest (ZMC) unverified
CW · 80m · AGCW-DL
- 1740Z Mon 5 Apr → 1830Z · 50min 26823 days
- 1740Z Mon 12 Apr → 1830Z · 50min 26830 days
- 1740Z Mon 19 Apr → 1830Z · 50min 26837 days
- 1740Z Mon 26 Apr → 1830Z · 50min 26844 days
ARS Spartan Sprint
CW · 80-10m · Adventure Radio Society
- 0000Z Tue 6 Apr → 0200Z · 2hin 26823 days
ZL Autumn and Winter Sprints, CW
CW · 80m · NZART
- 0800Z Tue 6 Apr → 0829Z · 29min 26824 days
- 0800Z Tue 13 Apr → 0829Z · 29min 26831 days
- 0800Z Tue 20 Apr → 0829Z · 29min 26838 days
- 0800Z Tue 27 Apr → 0829Z · 29min 26845 days
ZL Autumn and Winter Sprints, SSB
SSB · 80m · NZART
- 0830Z Tue 6 Apr → 0859Z · 29min 26824 days
- 0830Z Tue 13 Apr → 0859Z · 29min 26831 days
- 0830Z Tue 20 Apr → 0859Z · 29min 26838 days
- 0830Z Tue 27 Apr → 0859Z · 29min 26845 days
ZL Autumn and Winter Sprints, FT4
FT8/FT4FT4 · 80m · NZART
- 0900Z Tue 6 Apr → 0929Z · 29min 26824 days
- 0900Z Tue 13 Apr → 0929Z · 29min 26831 days
- 0900Z Tue 20 Apr → 0929Z · 29min 26838 days
- 0900Z Tue 27 Apr → 0929Z · 29min 26845 days
A1Club Weekly Test (AWT)
CW · A1 Club
- 1145Z Wed 7 Apr → 1300Z · 1h 15min 26825 days
- 1145Z Wed 14 Apr → 1300Z · 1h 15min 26832 days
- 1145Z Wed 21 Apr → 1300Z · 1h 15min 26839 days
- 1145Z Wed 28 Apr → 1300Z · 1h 15min 26846 days
VHF-UHF FT8 Activity: 144 MHz unverified
FT8/FT4 · 2m · QSO BANAT Association (YO2KQT)
- 1700Z Wed 7 Apr → 2100Z · 4hin 26825 days
Japan International DX Contest, CW
CW · 160-10m · JIDX Contest Committee
- 0700Z Sat 10 Apr → 1300Z Sun 11 Apr · 30hin 26828 days
IG-RY World Wide RTTY Contest
RTTYRTTY 45.45 baud · 80-10m · Interest Group RTTY (IG-RY)
- 1200Z Sat 10 Apr → 1800Z Sun 11 Apr · 30hin 26828 days
OK/OM DX Contest, SSB
SSB · 160-10m · CRK / SARA
- 1200Z Sat 10 Apr → 1159Z Sun 11 Apr · 23h 59min 26828 days
SKCC Weekend Sprintathon (WES)
CW · 160-6m · Straight Key Century Club
- 1200Z Sat 10 Apr → 2359Z Sun 11 Apr · 35h 59min 26828 days
New Mexico QSO Party
SSBCWDigitalFT8/FT4 · 160-2m · New Mexico QSO Party
- 1400Z Sat 10 Apr → 0200Z Sun 11 Apr · 12hin 26828 days
Africa FT4 DX Contest
FT8/FT4FT4 · 80m/40m/20m · SARL
- 1500Z Sat 10 Apr → 1800Z · 3hin 26828 days
Georgia QSO Party
SSBCW · Southeastern Contest Club and Southeast DX Club
- 1800Z Sat 10 Apr → 0359Z Sun 11 Apr · 9h 59min 26828 days
- 1400Z Sun 11 Apr → 2359Z · 9h 59min 26829 days
ZS4 QSO Party
CWSSB · 40m · Sasolburg Amateur Radio Club
- 1400Z Sun 11 Apr → 1500Z · 1hin 26829 days
4 States QRP Group Second Sunday Sprint (SSS)
CWSSBDigital · 160-10m · 4 States QRP Group
- 0000Z Mon 12 Apr → 0200Z · 2hin 26829 days
DARC RTTY-Kurzcontest
RTTYRTTY 45.45 baud · 80m/40m · DARC
- 1800Z Tue 13 Apr → 1929Z · 1h 29min 26831 days
VHF-UHF FT8 Activity: 432 MHz unverified
FT8/FT4 · 70cm · QSO BANAT Association (YO2KQT)
- 1700Z Wed 14 Apr → 2100Z · 4hin 26832 days
ES Open HF Championship
CWSSB · 80m/40m · ERAU
- 0500Z Sat 17 Apr → 0859Z · 3h 59min 26834 days
IARU Region 1 50 MHz MGM Contest
DigitalMGM (machine generated modes) · 6m · IARU Region 1 VHF+ Committee
- 1400Z Sat 17 Apr → 1400Z Sun 18 Apr · 24hin 26835 days
Michigan QSO Party
SSBCW · 80-10m · Mad River Radio Club
- 1600Z Sat 17 Apr → 0400Z Sun 18 Apr · 12hin 26835 days
Ontario QSO Party
SSBCW · 160-2m · Contest Club Ontario
- 1800Z Sat 17 Apr → 0300Z Sun 18 Apr · 9hin 26835 days
- 1200Z Sun 18 Apr → 2000Z · 8hin 26836 days
9A Activity Contest
CWSSBFM · 6-23cm · HRS
- 0700Z Sun 18 Apr → 1200Z · 5hin 26836 days
ÖVSV VHF/UHF/Microwave Activity Contest
CWSSBAMFM · 6-3cm · ÖVSV
- 0700Z Sun 18 Apr → 1300Z · 6hin 26836 days
Quebec QSO Party
SSBCW · 80-2m · Club Radio Amateur de l'Outaouais
- 1300Z Sun 18 Apr → 2359Z · 10h 59min 26836 days
World Amateur Radio Day Contest HF (RF-WD RH)
CWSSB · 80m · MRASZ
- 1600Z Sun 18 Apr → 1659Z · 59min 26836 days
Amatőr rádiózás világnapja RF-WD URH
CWSSB · 2m · MRASZ
- 1730Z Sun 18 Apr → 1829Z · 59min 26836 days
ARRL Rookie Roundup, SSB
SSB · 80-10m · ARRL
- 1800Z Sun 18 Apr → 2359Z · 5h 59min 26836 days
VHF-UHF FT8 Activity: 1296 MHz unverified
DigitalFT8 · 23cm · QSO BANAT Association (YO2KQT)
- 1700Z Wed 21 Apr → 2100Z · 4hin 26839 days
ALL JA Contest can't enter
CWSSBFMAM · 160-6m · JARL
- 1200Z Sat 24 Apr → 1200Z Sun 25 Apr · 24hin 26842 days
SP DX RTTY Contest
RTTY · 80-10m · PK RVG
- 1200Z Sat 24 Apr → 1200Z Sun 25 Apr · 24hin 26842 days
Helvetia Contest
CWSSBRTTYDigitalFT8/FT4PSK31, PSK63 · 160-10m · USKA
- 1300Z Sat 24 Apr → 1259Z Sun 25 Apr · 23h 59min 26842 days
SARL Saturday 40 m Club Contest can't enter
SSBCWRTTY · 40m · SARL
- 1500Z Sat 24 Apr → 1600Z · 1hin 26842 days
Florida QSO Party
SSBCW · 40-10m · Florida Contest Group
- 1600Z Sat 24 Apr → 0159Z Sun 25 Apr · 9h 59min 26842 days
- 1200Z Sun 25 Apr → 2159Z · 9h 59min 26843 days
BARTG Sprint75 Contest
RTTYRTTY 75 baud · 80-10m · BARTG
- 1700Z Sun 25 Apr → 2059Z · 3h 59min 26843 days
SKCC Straight Key Sprint (SKS)
CW · 160-6m · Straight Key Century Club
- 0000Z Wed 28 Apr → 0200Z · 2hin 26845 days

April 2100

Every session in April 210046

AGCW ZAP Merit Contest (ZMC) unverified

VHF-UHF FT8 Activity: 144 MHz unverified

VHF-UHF FT8 Activity: 432 MHz unverified

VHF-UHF FT8 Activity: 1296 MHz unverified

ALL JA Contest can't enter

SARL Saturday 40 m Club Contest can't enter