December 2051

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31 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 December 2051, by day
Mon	Tue	Wed	Thu	Fri	Sat	Sun
272 AGCW ZAP Merit Contest (ZMC) K1USN Slow Speed Test (SST)	28	292 A1Club Weekly Test (AWT) CWops Test (CWT)×2 (2 sessions)	301 CWops Test (CWT)×2 (2 sessions)	15 ARRL 160-Meter Contest K1USN Slow Speed Test (SST) NCCC FT4 Sprint (FT4 NS) NCCC RTTY Sprint (RTTY NS) NCCC Sprint (NS)	24 FT Roundup International FT Challenge USKA Weihnachtswettbewerb (SSB / Digital)×2 (2 sessions) continues: ARRL 160-Meter Contest	33 continues: ARRL 160-Meter Contest continues: FT Roundup continues: International FT Challenge
42 AGCW ZAP Merit Contest (ZMC) K1USN Slow Speed Test (SST)	51 ARS Spartan Sprint	63 A1Club Weekly Test (AWT) CWops Test (CWT)×2 (2 sessions) VHF-UHF FT8 Activity: 144 MHz	72 CWops Test (CWT)×2 (2 sessions) SKCC Straight Key Sprint Europe (SKSE)	84 K1USN Slow Speed Test (SST) NCCC FT4 Sprint (FT4 NS) NCCC RTTY Sprint (RTTY NS) NCCC Sprint (NS)	96 ARI 40/80 Contest ARRL 10-Meter Contest PODXS 070 Club Triple Play Low Band Sprint DOUBLEHEADER SKCC Weekend Sprintathon (WES) TRC DIGI Contest USKA Weihnachtswettbewerb (CW / Digital)×2 (2 sessions)	105 continues: ARI 40/80 Contest continues: ARRL 10-Meter Contest continues: PODXS 070 Club Triple Play Low Band Sprint DOUBLEHEADER continues: SKCC Weekend Sprintathon (WES) continues: TRC DIGI Contest
114 4 States QRP Group Second Sunday Sprint (SSS) AGCW ZAP Merit Contest (ZMC) K1USN Slow Speed Test (SST) continues: PODXS 070 Club Triple Play Low Band Sprint DOUBLEHEADER	121 DARC CW-Ausbildungscontest	133 A1Club Weekly Test (AWT) CWops Test (CWT)×2 (2 sessions) VHF-UHF FT8 Activity: 432 MHz	141 CWops Test (CWT)×2 (2 sessions)	155 AGB-Party K1USN Slow Speed Test (SST) NCCC FT4 Sprint (FT4 NS) NCCC RTTY Sprint (RTTY NS) NCCC Sprint (NS)	162 Croatian DX Contest (9A DX) OK DX RTTY Contest	174 ARRL Rookie Roundup, CW ÖVSV VHF/UHF/Microwave Activity Contest continues: Croatian DX Contest (9A DX) continues: OK DX RTTY Contest
182 AGCW ZAP Merit Contest (ZMC) K1USN Slow Speed Test (SST)	19	203 A1Club Weekly Test (AWT) CWops Test (CWT)×2 (2 sessions) VHF-UHF FT8 Activity: 1296 MHz	211 CWops Test (CWT)×2 (2 sessions)	224 K1USN Slow Speed Test (SST) NCCC FT4 Sprint (FT4 NS) NCCC RTTY Sprint (RTTY NS) NCCC Sprint (NS)	23	24
252 AGCW ZAP Merit Contest (ZMC) K1USN Slow Speed Test (SST)	261 DARC Weihnachtswettbewerb (XMAS Contest)	273 A1Club Weekly Test (AWT) CWops Test (CWT)×2 (2 sessions) SKCC Straight Key Sprint (SKS)	281 CWops Test (CWT)×2 (2 sessions)	294 K1USN Slow Speed Test (SST) NCCC FT4 Sprint (FT4 NS) NCCC RTTY Sprint (RTTY NS) NCCC Sprint (NS)	30	31

Every session in December 205131

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74 sessions across 31 contests; repeats share a row.

Contests starting in December 2051
Contest	Date	Start	End	Duration	Mode	Band	Sponsor	Starts in
NCCC FT4 Sprint (FT4 NS)5 sessions	Fri 1 DecFri 8 DecFri 15 DecFri 22 DecFri 29 Dec	0100Z0100Z0100Z0100Z0100Z	0130Z0130Z0130Z0130Z0130Z	30m	FT8/FT4FT4	160-6m	Northern California Contest Club (NCCC)	in 9169 daysin 9176 daysin 9183 daysin 9190 daysin 9197 days
NCCC RTTY Sprint (RTTY NS)5 sessions	Fri 1 DecFri 8 DecFri 15 DecFri 22 DecFri 29 Dec	0145Z0145Z0145Z0145Z0145Z	0215Z0215Z0215Z0215Z0215Z	30m	RTTY	160-15m	Northern California Contest Club (NCCC)	in 9169 daysin 9176 daysin 9183 daysin 9190 daysin 9197 days
NCCC Sprint (NS)5 sessions	Fri 1 DecFri 8 DecFri 15 DecFri 22 DecFri 29 Dec	0230Z0230Z0230Z0230Z0230Z	0300Z0300Z0300Z0300Z0300Z	30m	CW	160-15m	Northern California Contest Club (NCCC)	in 9169 daysin 9176 daysin 9183 daysin 9190 daysin 9197 days
K1USN Slow Speed Test (SST)9 sessions	Fri 1 DecMon 4 DecFri 8 DecMon 11 DecFri 15 DecMon 18 DecFri 22 DecMon 25 DecFri 29 Dec	2000Z0000Z2000Z0000Z2000Z0000Z2000Z0000Z2000Z	2100Z0100Z2100Z0100Z2100Z0100Z2100Z0100Z2100Z	1h	CW	160-10m	K1USN Radio Club	in 9170 daysin 9172 daysin 9177 daysin 9179 daysin 9184 daysin 9186 daysin 9191 daysin 9193 daysin 9198 days
ARRL 160-Meter Contest	Fri 1 Dec	2200Z	1559Z Sun 3 Dec	41h 59m	CW	160m	ARRL	in 9170 days
USKA Weihnachtswettbewerb (SSB / Digital) can't enter2 sessions	Sat 2 DecSat 2 Dec	0700Z1000Z	0959Z1059Z	2h 59m59m	SSBRTTYDigitalFT8/FT4PSK31, PSK63	80m/40m	USKA	in 9170 daysin 9171 days
International FT Challenge	Sat 2 Dec	1800Z	2359Z Sun 3 Dec	29h 59m	FT8/FT4FT4, FT8	80-10m	International FT Challenge	in 9171 days
FT Roundup	Sat 2 Dec	1800Z	2359Z Sun 3 Dec	29h 59m	FT8/FT4FT4, FT8	80-10m	RTTY Contesting	in 9171 days
AGCW ZAP Merit Contest (ZMC) unverified4 sessions	Mon 4 DecMon 11 DecMon 18 DecMon 25 Dec	1740Z1740Z1740Z1740Z	1830Z1830Z1830Z1830Z	50m	CW	80m	AGCW-DL	in 9173 daysin 9180 daysin 9187 daysin 9194 days
ARS Spartan Sprint	Tue 5 Dec	0100Z	0300Z	2h	CW	80-10m	Adventure Radio Society	in 9173 days
A1Club Weekly Test (AWT)4 sessions	Wed 6 DecWed 13 DecWed 20 DecWed 27 Dec	1145Z1145Z1145Z1145Z	1300Z1300Z1300Z1300Z	1h 15m	CW	not recorded	A1 Club	in 9175 daysin 9182 daysin 9189 daysin 9196 days
CWops Test (CWT)16 sessions	Wed 6 DecWed 6 DecThu 7 DecThu 7 DecWed 13 DecWed 13 DecThu 14 DecThu 14 DecWed 20 DecWed 20 DecThu 21 DecThu 21 DecWed 27 DecWed 27 DecThu 28 DecThu 28 Dec	1300Z1900Z0300Z0700Z1300Z1900Z0300Z0700Z1300Z1900Z0300Z0700Z1300Z1900Z0300Z0700Z	1400Z2000Z0400Z0800Z1400Z2000Z0400Z0800Z1400Z2000Z0400Z0800Z1400Z2000Z0400Z0800Z	1h	CW	160-6m	CWops	in 9175 daysin 9175 daysin 9175 daysin 9175 daysin 9182 daysin 9182 daysin 9182 daysin 9182 daysin 9189 daysin 9189 daysin 9189 daysin 9189 daysin 9196 daysin 9196 daysin 9196 daysin 9196 days
VHF-UHF FT8 Activity: 144 MHz unverified	Wed 6 Dec	1700Z	2100Z	4h	FT8/FT4	2m	QSO BANAT Association (YO2KQT)	in 9175 days
SKCC Straight Key Sprint Europe (SKSE)	Thu 7 Dec	2000Z	2200Z	2h	CW	160-6m	Straight Key Century Club	in 9176 days
ARRL 10-Meter Contest	Sat 9 Dec	0000Z	2359Z Sun 10 Dec	47h 59m	CWSSB	10m	ARRL	in 9177 days
PODXS 070 Club Triple Play Low Band Sprint DOUBLEHEADER	Sat 9 Dec	0000Z	2359Z Mon 11 Dec	71h 59m	DigitalPSK31	160m/80m/40m	PODXS 070 Club	in 9177 days
TRC DIGI Contest	Sat 9 Dec	0600Z	1800Z Sun 10 Dec	36h	RTTY	160-10m	Thracian Rose Club	in 9177 days
USKA Weihnachtswettbewerb (CW / Digital) can't enter2 sessions	Sat 9 DecSat 9 Dec	0700Z1000Z	0959Z1059Z	2h 59m59m	CWRTTYDigitalFT8/FT4PSK31, PSK63	80m/40m	USKA	in 9177 daysin 9178 days
SKCC Weekend Sprintathon (WES)	Sat 9 Dec	1200Z	2359Z Sun 10 Dec	35h 59m	CW	160-6m	Straight Key Century Club	in 9178 days
ARI 40/80 Contest can't enter	Sat 9 Dec	1300Z	1259Z Sun 10 Dec	23h 59m	CWSSBRTTY	80m/40m	ARI	in 9178 days
4 States QRP Group Second Sunday Sprint (SSS)	Mon 11 Dec	0100Z	0300Z	2h	CWSSBDigital	160-10m	4 States QRP Group	in 9179 days
DARC CW-Ausbildungscontest unverified	Tue 12 Dec	1800Z	1859Z	59m	CW	not recorded	DARC	in 9181 days
VHF-UHF FT8 Activity: 432 MHz unverified	Wed 13 Dec	1700Z	2100Z	4h	FT8/FT4	70cm	QSO BANAT Association (YO2KQT)	in 9182 days
AGB-Party unverified	Fri 15 Dec	1600Z	1700Z	1h	CWSSBDigitalFT8, FT4	80m/40m	AGB	in 9184 days
OK DX RTTY Contest	Sat 16 Dec	0000Z	0000Z Sun 17 Dec	24h	RTTYBaudot	80-10m	CRK	in 9184 days
Croatian DX Contest (9A DX)	Sat 16 Dec	1400Z	1359Z Sun 17 Dec	23h 59m	CWSSB	160-10m	HRS	in 9185 days
ÖVSV VHF/UHF/Microwave Activity Contest	Sun 17 Dec	0700Z	1300Z	6h	CWSSBAMFM	6-3cm	ÖVSV	in 9185 days
ARRL Rookie Roundup, CW	Sun 17 Dec	1800Z	2359Z	5h 59m	CW	80-10m	ARRL	in 9186 days
VHF-UHF FT8 Activity: 1296 MHz unverified	Wed 20 Dec	1700Z	2100Z	4h	DigitalFT8	23cm	QSO BANAT Association (YO2KQT)	in 9189 days
DARC Weihnachtswettbewerb (XMAS Contest)	Tue 26 Dec	0830Z	1059Z	2h 29m	CWSSB	80m/40m	DARC	in 9194 days
SKCC Straight Key Sprint (SKS)	Wed 27 Dec	0000Z	0200Z	2h	CW	160-6m	Straight Key Century Club	in 9195 days

NCCC FT4 Sprint (FT4 NS)
FT8/FT4FT4 · 160-6m · Northern California Contest Club (NCCC)
- 0100Z Fri 1 Dec → 0130Z · 30min 9169 days
- 0100Z Fri 8 Dec → 0130Z · 30min 9176 days
- 0100Z Fri 15 Dec → 0130Z · 30min 9183 days
- 0100Z Fri 22 Dec → 0130Z · 30min 9190 days
- 0100Z Fri 29 Dec → 0130Z · 30min 9197 days
NCCC RTTY Sprint (RTTY NS)
RTTY · 160-15m · Northern California Contest Club (NCCC)
- 0145Z Fri 1 Dec → 0215Z · 30min 9169 days
- 0145Z Fri 8 Dec → 0215Z · 30min 9176 days
- 0145Z Fri 15 Dec → 0215Z · 30min 9183 days
- 0145Z Fri 22 Dec → 0215Z · 30min 9190 days
- 0145Z Fri 29 Dec → 0215Z · 30min 9197 days
NCCC Sprint (NS)
CW · 160-15m · Northern California Contest Club (NCCC)
- 0230Z Fri 1 Dec → 0300Z · 30min 9169 days
- 0230Z Fri 8 Dec → 0300Z · 30min 9176 days
- 0230Z Fri 15 Dec → 0300Z · 30min 9183 days
- 0230Z Fri 22 Dec → 0300Z · 30min 9190 days
- 0230Z Fri 29 Dec → 0300Z · 30min 9197 days
K1USN Slow Speed Test (SST)
CW · 160-10m · K1USN Radio Club
- 2000Z Fri 1 Dec → 2100Z · 1hin 9170 days
- 0000Z Mon 4 Dec → 0100Z · 1hin 9172 days
- 2000Z Fri 8 Dec → 2100Z · 1hin 9177 days
- 0000Z Mon 11 Dec → 0100Z · 1hin 9179 days
- 2000Z Fri 15 Dec → 2100Z · 1hin 9184 days
- 0000Z Mon 18 Dec → 0100Z · 1hin 9186 days
- 2000Z Fri 22 Dec → 2100Z · 1hin 9191 days
- 0000Z Mon 25 Dec → 0100Z · 1hin 9193 days
- 2000Z Fri 29 Dec → 2100Z · 1hin 9198 days
ARRL 160-Meter Contest
CW · 160m · ARRL
- 2200Z Fri 1 Dec → 1559Z Sun 3 Dec · 41h 59min 9170 days
USKA Weihnachtswettbewerb (SSB / Digital) can't enter
SSBRTTYDigitalFT8/FT4PSK31, PSK63 · 80m/40m · USKA
- 0700Z Sat 2 Dec → 0959Z · 2h 59min 9170 days
- 1000Z Sat 2 Dec → 1059Z · 59min 9171 days
International FT Challenge
FT8/FT4FT4, FT8 · 80-10m · International FT Challenge
- 1800Z Sat 2 Dec → 2359Z Sun 3 Dec · 29h 59min 9171 days
FT Roundup
FT8/FT4FT4, FT8 · 80-10m · RTTY Contesting
- 1800Z Sat 2 Dec → 2359Z Sun 3 Dec · 29h 59min 9171 days
AGCW ZAP Merit Contest (ZMC) unverified
CW · 80m · AGCW-DL
- 1740Z Mon 4 Dec → 1830Z · 50min 9173 days
- 1740Z Mon 11 Dec → 1830Z · 50min 9180 days
- 1740Z Mon 18 Dec → 1830Z · 50min 9187 days
- 1740Z Mon 25 Dec → 1830Z · 50min 9194 days
ARS Spartan Sprint
CW · 80-10m · Adventure Radio Society
- 0100Z Tue 5 Dec → 0300Z · 2hin 9173 days
A1Club Weekly Test (AWT)
CW · A1 Club
- 1145Z Wed 6 Dec → 1300Z · 1h 15min 9175 days
- 1145Z Wed 13 Dec → 1300Z · 1h 15min 9182 days
- 1145Z Wed 20 Dec → 1300Z · 1h 15min 9189 days
- 1145Z Wed 27 Dec → 1300Z · 1h 15min 9196 days
CWops Test (CWT)
CW · 160-6m · CWops
- 1300Z Wed 6 Dec → 1400Z · 1hin 9175 days
- 1900Z Wed 6 Dec → 2000Z · 1hin 9175 days
- 0300Z Thu 7 Dec → 0400Z · 1hin 9175 days
- 0700Z Thu 7 Dec → 0800Z · 1hin 9175 days
- 1300Z Wed 13 Dec → 1400Z · 1hin 9182 days
- 1900Z Wed 13 Dec → 2000Z · 1hin 9182 days
- 0300Z Thu 14 Dec → 0400Z · 1hin 9182 days
- 0700Z Thu 14 Dec → 0800Z · 1hin 9182 days
- 1300Z Wed 20 Dec → 1400Z · 1hin 9189 days
- 1900Z Wed 20 Dec → 2000Z · 1hin 9189 days
- 0300Z Thu 21 Dec → 0400Z · 1hin 9189 days
- 0700Z Thu 21 Dec → 0800Z · 1hin 9189 days
- 1300Z Wed 27 Dec → 1400Z · 1hin 9196 days
- 1900Z Wed 27 Dec → 2000Z · 1hin 9196 days
- 0300Z Thu 28 Dec → 0400Z · 1hin 9196 days
- 0700Z Thu 28 Dec → 0800Z · 1hin 9196 days
VHF-UHF FT8 Activity: 144 MHz unverified
FT8/FT4 · 2m · QSO BANAT Association (YO2KQT)
- 1700Z Wed 6 Dec → 2100Z · 4hin 9175 days
SKCC Straight Key Sprint Europe (SKSE)
CW · 160-6m · Straight Key Century Club
- 2000Z Thu 7 Dec → 2200Z · 2hin 9176 days
ARRL 10-Meter Contest
CWSSB · 10m · ARRL
- 0000Z Sat 9 Dec → 2359Z Sun 10 Dec · 47h 59min 9177 days
PODXS 070 Club Triple Play Low Band Sprint DOUBLEHEADER
DigitalPSK31 · 160m/80m/40m · PODXS 070 Club
- 0000Z Sat 9 Dec → 2359Z Mon 11 Dec · 71h 59min 9177 days
TRC DIGI Contest
RTTY · 160-10m · Thracian Rose Club
- 0600Z Sat 9 Dec → 1800Z Sun 10 Dec · 36hin 9177 days
USKA Weihnachtswettbewerb (CW / Digital) can't enter
CWRTTYDigitalFT8/FT4PSK31, PSK63 · 80m/40m · USKA
- 0700Z Sat 9 Dec → 0959Z · 2h 59min 9177 days
- 1000Z Sat 9 Dec → 1059Z · 59min 9178 days
SKCC Weekend Sprintathon (WES)
CW · 160-6m · Straight Key Century Club
- 1200Z Sat 9 Dec → 2359Z Sun 10 Dec · 35h 59min 9178 days
ARI 40/80 Contest can't enter
CWSSBRTTY · 80m/40m · ARI
- 1300Z Sat 9 Dec → 1259Z Sun 10 Dec · 23h 59min 9178 days
4 States QRP Group Second Sunday Sprint (SSS)
CWSSBDigital · 160-10m · 4 States QRP Group
- 0100Z Mon 11 Dec → 0300Z · 2hin 9179 days
DARC CW-Ausbildungscontest unverified
CW · DARC
- 1800Z Tue 12 Dec → 1859Z · 59min 9181 days
VHF-UHF FT8 Activity: 432 MHz unverified
FT8/FT4 · 70cm · QSO BANAT Association (YO2KQT)
- 1700Z Wed 13 Dec → 2100Z · 4hin 9182 days
AGB-Party unverified
CWSSBDigitalFT8, FT4 · 80m/40m · AGB
- 1600Z Fri 15 Dec → 1700Z · 1hin 9184 days
OK DX RTTY Contest
RTTYBaudot · 80-10m · CRK
- 0000Z Sat 16 Dec → 0000Z Sun 17 Dec · 24hin 9184 days
Croatian DX Contest (9A DX)
CWSSB · 160-10m · HRS
- 1400Z Sat 16 Dec → 1359Z Sun 17 Dec · 23h 59min 9185 days
ÖVSV VHF/UHF/Microwave Activity Contest
CWSSBAMFM · 6-3cm · ÖVSV
- 0700Z Sun 17 Dec → 1300Z · 6hin 9185 days
ARRL Rookie Roundup, CW
CW · 80-10m · ARRL
- 1800Z Sun 17 Dec → 2359Z · 5h 59min 9186 days
VHF-UHF FT8 Activity: 1296 MHz unverified
DigitalFT8 · 23cm · QSO BANAT Association (YO2KQT)
- 1700Z Wed 20 Dec → 2100Z · 4hin 9189 days
DARC Weihnachtswettbewerb (XMAS Contest)
CWSSB · 80m/40m · DARC
- 0830Z Tue 26 Dec → 1059Z · 2h 29min 9194 days
SKCC Straight Key Sprint (SKS)
CW · 160-6m · Straight Key Century Club
- 0000Z Wed 27 Dec → 0200Z · 2hin 9195 days

December 2051

Every session in December 205131

USKA Weihnachtswettbewerb (SSB / Digital) can't enter

AGCW ZAP Merit Contest (ZMC) unverified

VHF-UHF FT8 Activity: 144 MHz unverified

USKA Weihnachtswettbewerb (CW / Digital) can't enter

ARI 40/80 Contest can't enter

DARC CW-Ausbildungscontest unverified

VHF-UHF FT8 Activity: 432 MHz unverified

AGB-Party unverified

VHF-UHF FT8 Activity: 1296 MHz unverified