December 2031

← November This month January → DXpeditions

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 2031, by day
Mon	Tue	Wed	Thu	Fri	Sat	Sun
12 AGCW ZAP Merit Contest (ZMC) K1USN Slow Speed Test (SST)	21 ARS Spartan Sprint	33 A1Club Weekly Test (AWT) CWops Test (CWT)×2 (2 sessions) VHF-UHF FT8 Activity: 144 MHz	42 CWops Test (CWT)×2 (2 sessions) SKCC Straight Key Sprint Europe (SKSE)	55 ARRL 160-Meter Contest K1USN Slow Speed Test (SST) NCCC FT4 Sprint (FT4 NS) NCCC RTTY Sprint (RTTY NS) NCCC Sprint (NS)	64 FT Roundup International FT Challenge USKA Weihnachtswettbewerb (SSB / Digital)×2 (2 sessions) continues: ARRL 160-Meter Contest	73 continues: ARRL 160-Meter Contest continues: FT Roundup continues: International FT Challenge
82 AGCW ZAP Merit Contest (ZMC) K1USN Slow Speed Test (SST)	91 DARC CW-Ausbildungscontest	103 A1Club Weekly Test (AWT) CWops Test (CWT)×2 (2 sessions) VHF-UHF FT8 Activity: 432 MHz	111 CWops Test (CWT)×2 (2 sessions)	124 K1USN Slow Speed Test (SST) NCCC FT4 Sprint (FT4 NS) NCCC RTTY Sprint (RTTY NS) NCCC Sprint (NS)	136 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)	145 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
154 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	16	173 A1Club Weekly Test (AWT) CWops Test (CWT)×2 (2 sessions) VHF-UHF FT8 Activity: 1296 MHz	181 CWops Test (CWT)×2 (2 sessions)	195 AGB-Party K1USN Slow Speed Test (SST) NCCC FT4 Sprint (FT4 NS) NCCC RTTY Sprint (RTTY NS) NCCC Sprint (NS)	202 Croatian DX Contest (9A DX) OK DX RTTY Contest	214 ARRL Rookie Roundup, CW ÖVSV VHF/UHF/Microwave Activity Contest continues: Croatian DX Contest (9A DX) continues: OK DX RTTY Contest
222 AGCW ZAP Merit Contest (ZMC) K1USN Slow Speed Test (SST)	23	243 A1Club Weekly Test (AWT) CWops Test (CWT)×2 (2 sessions) SKCC Straight Key Sprint (SKS)	251 CWops Test (CWT)×2 (2 sessions)	265 DARC Weihnachtswettbewerb (XMAS Contest) K1USN Slow Speed Test (SST) NCCC FT4 Sprint (FT4 NS) NCCC RTTY Sprint (RTTY NS) NCCC Sprint (NS)	27	28
292 AGCW ZAP Merit Contest (ZMC) K1USN Slow Speed Test (SST)	30	312 A1Club Weekly Test (AWT) CWops Test (CWT)×2 (2 sessions)	16 AGB New Year Snowball AGCW Happy New Year Contest (HNY) AGCW VHF/UHF Contest×2 (2 sessions) ARRL Straight Key Night SARTG New Year RTTY Contest SKCC Straight Key Sprint Europe (SKSE)	24 NCCC FT4 Sprint (FT4 NS) NCCC RTTY Sprint (RTTY NS) NCCC Sprint (NS) New Year QSO Party	35 ARRL Kids Day (January) ARRL RTTY Roundup PODXS 070 Club PSKfest RSGB AFS Contest, CW continues: New Year QSO Party	43 Vytautas Magnus Contest (VMC) continues: ARRL RTTY Roundup continues: New Year QSO Party

Every session in December 203131

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75 sessions across 31 contests; repeats share a row.

Contests starting in December 2031
Contest	Date	Start	End	Duration	Mode	Band	Sponsor	Starts in
K1USN Slow Speed Test (SST)9 sessions	Mon 1 DecFri 5 DecMon 8 DecFri 12 DecMon 15 DecFri 19 DecMon 22 DecFri 26 DecMon 29 Dec	0000Z2000Z0000Z2000Z0000Z2000Z0000Z2000Z0000Z	0100Z2100Z0100Z2100Z0100Z2100Z0100Z2100Z0100Z	1h	CW	160-10m	K1USN Radio Club	in 1869 daysin 1874 daysin 1876 daysin 1881 daysin 1883 daysin 1888 daysin 1890 daysin 1895 daysin 1897 days
AGCW ZAP Merit Contest (ZMC) unverified5 sessions	Mon 1 DecMon 8 DecMon 15 DecMon 22 DecMon 29 Dec	1740Z1740Z1740Z1740Z1740Z	1830Z1830Z1830Z1830Z1830Z	50m	CW	80m	AGCW-DL	in 1870 daysin 1877 daysin 1884 daysin 1891 daysin 1898 days
ARS Spartan Sprint	Tue 2 Dec	0100Z	0300Z	2h	CW	80-10m	Adventure Radio Society	in 1870 days
A1Club Weekly Test (AWT)5 sessions	Wed 3 DecWed 10 DecWed 17 DecWed 24 DecWed 31 Dec	1145Z1145Z1145Z1145Z1145Z	1300Z1300Z1300Z1300Z1300Z	1h 15m	CW	not recorded	A1 Club	in 1871 daysin 1878 daysin 1885 daysin 1892 daysin 1899 days
CWops Test (CWT)18 sessions	Wed 3 DecWed 3 DecThu 4 DecThu 4 DecWed 10 DecWed 10 DecThu 11 DecThu 11 DecWed 17 DecWed 17 DecThu 18 DecThu 18 DecWed 24 DecWed 24 DecThu 25 DecThu 25 DecWed 31 DecWed 31 Dec	1300Z1900Z0300Z0700Z1300Z1900Z0300Z0700Z1300Z1900Z0300Z0700Z1300Z1900Z0300Z0700Z1300Z1900Z	1400Z2000Z0400Z0800Z1400Z2000Z0400Z0800Z1400Z2000Z0400Z0800Z1400Z2000Z0400Z0800Z1400Z2000Z	1h	CW	160-6m	CWops	in 1871 daysin 1872 daysin 1872 daysin 1872 daysin 1878 daysin 1879 daysin 1879 daysin 1879 daysin 1885 daysin 1886 daysin 1886 daysin 1886 daysin 1892 daysin 1893 daysin 1893 daysin 1893 daysin 1899 daysin 1900 days
VHF-UHF FT8 Activity: 144 MHz unverified	Wed 3 Dec	1700Z	2100Z	4h	FT8/FT4	2m	QSO BANAT Association (YO2KQT)	in 1872 days
SKCC Straight Key Sprint Europe (SKSE)	Thu 4 Dec	2000Z	2200Z	2h	CW	160-6m	Straight Key Century Club	in 1873 days
NCCC FT4 Sprint (FT4 NS)4 sessions	Fri 5 DecFri 12 DecFri 19 DecFri 26 Dec	0100Z0100Z0100Z0100Z	0130Z0130Z0130Z0130Z	30m	FT8/FT4FT4	160-6m	Northern California Contest Club (NCCC)	in 1873 daysin 1880 daysin 1887 daysin 1894 days
NCCC RTTY Sprint (RTTY NS)4 sessions	Fri 5 DecFri 12 DecFri 19 DecFri 26 Dec	0145Z0145Z0145Z0145Z	0215Z0215Z0215Z0215Z	30m	RTTY	160-15m	Northern California Contest Club (NCCC)	in 1873 daysin 1880 daysin 1887 daysin 1894 days
NCCC Sprint (NS)4 sessions	Fri 5 DecFri 12 DecFri 19 DecFri 26 Dec	0230Z0230Z0230Z0230Z	0300Z0300Z0300Z0300Z	30m	CW	160-15m	Northern California Contest Club (NCCC)	in 1873 daysin 1880 daysin 1887 daysin 1894 days
ARRL 160-Meter Contest	Fri 5 Dec	2200Z	1559Z Sun 7 Dec	41h 59m	CW	160m	ARRL	in 1874 days
USKA Weihnachtswettbewerb (SSB / Digital) can't enter2 sessions	Sat 6 DecSat 6 Dec	0700Z1000Z	0959Z1059Z	2h 59m59m	SSBRTTYDigitalFT8/FT4PSK31, PSK63	80m/40m	USKA	in 1874 daysin 1874 days
International FT Challenge	Sat 6 Dec	1800Z	2359Z Sun 7 Dec	29h 59m	FT8/FT4FT4, FT8	80-10m	International FT Challenge	in 1875 days
FT Roundup	Sat 6 Dec	1800Z	2359Z Sun 7 Dec	29h 59m	FT8/FT4FT4, FT8	80-10m	RTTY Contesting	in 1875 days
DARC CW-Ausbildungscontest unverified	Tue 9 Dec	1800Z	1859Z	59m	CW	not recorded	DARC	in 1878 days
VHF-UHF FT8 Activity: 432 MHz unverified	Wed 10 Dec	1700Z	2100Z	4h	FT8/FT4	70cm	QSO BANAT Association (YO2KQT)	in 1879 days
ARRL 10-Meter Contest	Sat 13 Dec	0000Z	2359Z Sun 14 Dec	47h 59m	CWSSB	10m	ARRL	in 1881 days
PODXS 070 Club Triple Play Low Band Sprint DOUBLEHEADER	Sat 13 Dec	0000Z	2359Z Mon 15 Dec	71h 59m	DigitalPSK31	160m/80m/40m	PODXS 070 Club	in 1881 days
TRC DIGI Contest	Sat 13 Dec	0600Z	1800Z Sun 14 Dec	36h	RTTY	160-10m	Thracian Rose Club	in 1881 days
USKA Weihnachtswettbewerb (CW / Digital) can't enter2 sessions	Sat 13 DecSat 13 Dec	0700Z1000Z	0959Z1059Z	2h 59m59m	CWRTTYDigitalFT8/FT4PSK31, PSK63	80m/40m	USKA	in 1881 daysin 1881 days
SKCC Weekend Sprintathon (WES)	Sat 13 Dec	1200Z	2359Z Sun 14 Dec	35h 59m	CW	160-6m	Straight Key Century Club	in 1881 days
ARI 40/80 Contest can't enter	Sat 13 Dec	1300Z	1259Z Sun 14 Dec	23h 59m	CWSSBRTTY	80m/40m	ARI	in 1881 days
4 States QRP Group Second Sunday Sprint (SSS)	Mon 15 Dec	0100Z	0300Z	2h	CWSSBDigital	160-10m	4 States QRP Group	in 1883 days
VHF-UHF FT8 Activity: 1296 MHz unverified	Wed 17 Dec	1700Z	2100Z	4h	DigitalFT8	23cm	QSO BANAT Association (YO2KQT)	in 1886 days
AGB-Party unverified	Fri 19 Dec	1600Z	1700Z	1h	CWSSBDigitalFT8, FT4	80m/40m	AGB	in 1888 days
OK DX RTTY Contest	Sat 20 Dec	0000Z	0000Z Sun 21 Dec	24h	RTTYBaudot	80-10m	CRK	in 1888 days
Croatian DX Contest (9A DX)	Sat 20 Dec	1400Z	1359Z Sun 21 Dec	23h 59m	CWSSB	160-10m	HRS	in 1888 days
ÖVSV VHF/UHF/Microwave Activity Contest	Sun 21 Dec	0700Z	1300Z	6h	CWSSBAMFM	6-3cm	ÖVSV	in 1889 days
ARRL Rookie Roundup, CW	Sun 21 Dec	1800Z	2359Z	5h 59m	CW	80-10m	ARRL	in 1890 days
SKCC Straight Key Sprint (SKS)	Wed 24 Dec	0000Z	0200Z	2h	CW	160-6m	Straight Key Century Club	in 1892 days
DARC Weihnachtswettbewerb (XMAS Contest)	Fri 26 Dec	0830Z	1059Z	2h 29m	CWSSB	80m/40m	DARC	in 1894 days

K1USN Slow Speed Test (SST)
CW · 160-10m · K1USN Radio Club
- 0000Z Mon 1 Dec → 0100Z · 1hin 1869 days
- 2000Z Fri 5 Dec → 2100Z · 1hin 1874 days
- 0000Z Mon 8 Dec → 0100Z · 1hin 1876 days
- 2000Z Fri 12 Dec → 2100Z · 1hin 1881 days
- 0000Z Mon 15 Dec → 0100Z · 1hin 1883 days
- 2000Z Fri 19 Dec → 2100Z · 1hin 1888 days
- 0000Z Mon 22 Dec → 0100Z · 1hin 1890 days
- 2000Z Fri 26 Dec → 2100Z · 1hin 1895 days
- 0000Z Mon 29 Dec → 0100Z · 1hin 1897 days
AGCW ZAP Merit Contest (ZMC) unverified
CW · 80m · AGCW-DL
- 1740Z Mon 1 Dec → 1830Z · 50min 1870 days
- 1740Z Mon 8 Dec → 1830Z · 50min 1877 days
- 1740Z Mon 15 Dec → 1830Z · 50min 1884 days
- 1740Z Mon 22 Dec → 1830Z · 50min 1891 days
- 1740Z Mon 29 Dec → 1830Z · 50min 1898 days
ARS Spartan Sprint
CW · 80-10m · Adventure Radio Society
- 0100Z Tue 2 Dec → 0300Z · 2hin 1870 days
A1Club Weekly Test (AWT)
CW · A1 Club
- 1145Z Wed 3 Dec → 1300Z · 1h 15min 1871 days
- 1145Z Wed 10 Dec → 1300Z · 1h 15min 1878 days
- 1145Z Wed 17 Dec → 1300Z · 1h 15min 1885 days
- 1145Z Wed 24 Dec → 1300Z · 1h 15min 1892 days
- 1145Z Wed 31 Dec → 1300Z · 1h 15min 1899 days
CWops Test (CWT)
CW · 160-6m · CWops
- 1300Z Wed 3 Dec → 1400Z · 1hin 1871 days
- 1900Z Wed 3 Dec → 2000Z · 1hin 1872 days
- 0300Z Thu 4 Dec → 0400Z · 1hin 1872 days
- 0700Z Thu 4 Dec → 0800Z · 1hin 1872 days
- 1300Z Wed 10 Dec → 1400Z · 1hin 1878 days
- 1900Z Wed 10 Dec → 2000Z · 1hin 1879 days
- 0300Z Thu 11 Dec → 0400Z · 1hin 1879 days
- 0700Z Thu 11 Dec → 0800Z · 1hin 1879 days
- 1300Z Wed 17 Dec → 1400Z · 1hin 1885 days
- 1900Z Wed 17 Dec → 2000Z · 1hin 1886 days
- 0300Z Thu 18 Dec → 0400Z · 1hin 1886 days
- 0700Z Thu 18 Dec → 0800Z · 1hin 1886 days
- 1300Z Wed 24 Dec → 1400Z · 1hin 1892 days
- 1900Z Wed 24 Dec → 2000Z · 1hin 1893 days
- 0300Z Thu 25 Dec → 0400Z · 1hin 1893 days
- 0700Z Thu 25 Dec → 0800Z · 1hin 1893 days
- 1300Z Wed 31 Dec → 1400Z · 1hin 1899 days
- 1900Z Wed 31 Dec → 2000Z · 1hin 1900 days
VHF-UHF FT8 Activity: 144 MHz unverified
FT8/FT4 · 2m · QSO BANAT Association (YO2KQT)
- 1700Z Wed 3 Dec → 2100Z · 4hin 1872 days
SKCC Straight Key Sprint Europe (SKSE)
CW · 160-6m · Straight Key Century Club
- 2000Z Thu 4 Dec → 2200Z · 2hin 1873 days
NCCC FT4 Sprint (FT4 NS)
FT8/FT4FT4 · 160-6m · Northern California Contest Club (NCCC)
- 0100Z Fri 5 Dec → 0130Z · 30min 1873 days
- 0100Z Fri 12 Dec → 0130Z · 30min 1880 days
- 0100Z Fri 19 Dec → 0130Z · 30min 1887 days
- 0100Z Fri 26 Dec → 0130Z · 30min 1894 days
NCCC RTTY Sprint (RTTY NS)
RTTY · 160-15m · Northern California Contest Club (NCCC)
- 0145Z Fri 5 Dec → 0215Z · 30min 1873 days
- 0145Z Fri 12 Dec → 0215Z · 30min 1880 days
- 0145Z Fri 19 Dec → 0215Z · 30min 1887 days
- 0145Z Fri 26 Dec → 0215Z · 30min 1894 days
NCCC Sprint (NS)
CW · 160-15m · Northern California Contest Club (NCCC)
- 0230Z Fri 5 Dec → 0300Z · 30min 1873 days
- 0230Z Fri 12 Dec → 0300Z · 30min 1880 days
- 0230Z Fri 19 Dec → 0300Z · 30min 1887 days
- 0230Z Fri 26 Dec → 0300Z · 30min 1894 days
ARRL 160-Meter Contest
CW · 160m · ARRL
- 2200Z Fri 5 Dec → 1559Z Sun 7 Dec · 41h 59min 1874 days
USKA Weihnachtswettbewerb (SSB / Digital) can't enter
SSBRTTYDigitalFT8/FT4PSK31, PSK63 · 80m/40m · USKA
- 0700Z Sat 6 Dec → 0959Z · 2h 59min 1874 days
- 1000Z Sat 6 Dec → 1059Z · 59min 1874 days
International FT Challenge
FT8/FT4FT4, FT8 · 80-10m · International FT Challenge
- 1800Z Sat 6 Dec → 2359Z Sun 7 Dec · 29h 59min 1875 days
FT Roundup
FT8/FT4FT4, FT8 · 80-10m · RTTY Contesting
- 1800Z Sat 6 Dec → 2359Z Sun 7 Dec · 29h 59min 1875 days
DARC CW-Ausbildungscontest unverified
CW · DARC
- 1800Z Tue 9 Dec → 1859Z · 59min 1878 days
VHF-UHF FT8 Activity: 432 MHz unverified
FT8/FT4 · 70cm · QSO BANAT Association (YO2KQT)
- 1700Z Wed 10 Dec → 2100Z · 4hin 1879 days
ARRL 10-Meter Contest
CWSSB · 10m · ARRL
- 0000Z Sat 13 Dec → 2359Z Sun 14 Dec · 47h 59min 1881 days
PODXS 070 Club Triple Play Low Band Sprint DOUBLEHEADER
DigitalPSK31 · 160m/80m/40m · PODXS 070 Club
- 0000Z Sat 13 Dec → 2359Z Mon 15 Dec · 71h 59min 1881 days
TRC DIGI Contest
RTTY · 160-10m · Thracian Rose Club
- 0600Z Sat 13 Dec → 1800Z Sun 14 Dec · 36hin 1881 days
USKA Weihnachtswettbewerb (CW / Digital) can't enter
CWRTTYDigitalFT8/FT4PSK31, PSK63 · 80m/40m · USKA
- 0700Z Sat 13 Dec → 0959Z · 2h 59min 1881 days
- 1000Z Sat 13 Dec → 1059Z · 59min 1881 days
SKCC Weekend Sprintathon (WES)
CW · 160-6m · Straight Key Century Club
- 1200Z Sat 13 Dec → 2359Z Sun 14 Dec · 35h 59min 1881 days
ARI 40/80 Contest can't enter
CWSSBRTTY · 80m/40m · ARI
- 1300Z Sat 13 Dec → 1259Z Sun 14 Dec · 23h 59min 1881 days
4 States QRP Group Second Sunday Sprint (SSS)
CWSSBDigital · 160-10m · 4 States QRP Group
- 0100Z Mon 15 Dec → 0300Z · 2hin 1883 days
VHF-UHF FT8 Activity: 1296 MHz unverified
DigitalFT8 · 23cm · QSO BANAT Association (YO2KQT)
- 1700Z Wed 17 Dec → 2100Z · 4hin 1886 days
AGB-Party unverified
CWSSBDigitalFT8, FT4 · 80m/40m · AGB
- 1600Z Fri 19 Dec → 1700Z · 1hin 1888 days
OK DX RTTY Contest
RTTYBaudot · 80-10m · CRK
- 0000Z Sat 20 Dec → 0000Z Sun 21 Dec · 24hin 1888 days
Croatian DX Contest (9A DX)
CWSSB · 160-10m · HRS
- 1400Z Sat 20 Dec → 1359Z Sun 21 Dec · 23h 59min 1888 days
ÖVSV VHF/UHF/Microwave Activity Contest
CWSSBAMFM · 6-3cm · ÖVSV
- 0700Z Sun 21 Dec → 1300Z · 6hin 1889 days
ARRL Rookie Roundup, CW
CW · 80-10m · ARRL
- 1800Z Sun 21 Dec → 2359Z · 5h 59min 1890 days
SKCC Straight Key Sprint (SKS)
CW · 160-6m · Straight Key Century Club
- 0000Z Wed 24 Dec → 0200Z · 2hin 1892 days
DARC Weihnachtswettbewerb (XMAS Contest)
CWSSB · 80m/40m · DARC
- 0830Z Fri 26 Dec → 1059Z · 2h 29min 1894 days

December 2031

Every session in December 203131

AGCW ZAP Merit Contest (ZMC) unverified

VHF-UHF FT8 Activity: 144 MHz unverified

USKA Weihnachtswettbewerb (SSB / Digital) can't enter

DARC CW-Ausbildungscontest unverified

VHF-UHF FT8 Activity: 432 MHz unverified

USKA Weihnachtswettbewerb (CW / Digital) can't enter

ARI 40/80 Contest can't enter

VHF-UHF FT8 Activity: 1296 MHz unverified

AGB-Party unverified