December 2083

← 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 2083, by day
Mon	Tue	Wed	Thu	Fri	Sat	Sun
292 AGCW ZAP Merit Contest (ZMC) K1USN Slow Speed Test (SST)	30	13 A1Club Weekly Test (AWT) CWops Test (CWT)×2 (2 sessions) VHF-UHF FT8 Activity: 144 MHz	22 CWops Test (CWT)×2 (2 sessions) SKCC Straight Key Sprint Europe (SKSE)	35 ARRL 160-Meter Contest K1USN Slow Speed Test (SST) NCCC FT4 Sprint (FT4 NS) NCCC RTTY Sprint (RTTY NS) NCCC Sprint (NS)	44 FT Roundup International FT Challenge USKA Weihnachtswettbewerb (SSB / Digital)×2 (2 sessions) continues: ARRL 160-Meter Contest	53 continues: ARRL 160-Meter Contest continues: FT Roundup continues: International FT Challenge
62 AGCW ZAP Merit Contest (ZMC) K1USN Slow Speed Test (SST)	71 ARS Spartan Sprint	83 A1Club Weekly Test (AWT) CWops Test (CWT)×2 (2 sessions) VHF-UHF FT8 Activity: 432 MHz	91 CWops Test (CWT)×2 (2 sessions)	104 K1USN Slow Speed Test (SST) NCCC FT4 Sprint (FT4 NS) NCCC RTTY Sprint (RTTY NS) NCCC Sprint (NS)	116 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)	125 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
134 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	141 DARC CW-Ausbildungscontest	153 A1Club Weekly Test (AWT) CWops Test (CWT)×2 (2 sessions) VHF-UHF FT8 Activity: 1296 MHz	161 CWops Test (CWT)×2 (2 sessions)	175 AGB-Party K1USN Slow Speed Test (SST) NCCC FT4 Sprint (FT4 NS) NCCC RTTY Sprint (RTTY NS) NCCC Sprint (NS)	182 Croatian DX Contest (9A DX) OK DX RTTY Contest	194 ARRL Rookie Roundup, CW ÖVSV VHF/UHF/Microwave Activity Contest continues: Croatian DX Contest (9A DX) continues: OK DX RTTY Contest
202 AGCW ZAP Merit Contest (ZMC) K1USN Slow Speed Test (SST)	21	223 A1Club Weekly Test (AWT) CWops Test (CWT)×2 (2 sessions) SKCC Straight Key Sprint (SKS)	231 CWops Test (CWT)×2 (2 sessions)	244 K1USN Slow Speed Test (SST) NCCC FT4 Sprint (FT4 NS) NCCC RTTY Sprint (RTTY NS) NCCC Sprint (NS)	25	261 DARC Weihnachtswettbewerb (XMAS Contest)
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)	314 K1USN Slow Speed Test (SST) NCCC FT4 Sprint (FT4 NS) NCCC RTTY Sprint (RTTY NS) NCCC Sprint (NS)	16 AGB New Year Snowball AGCW Happy New Year Contest (HNY) AGCW VHF/UHF Contest×2 (2 sessions) ARRL Kids Day (January) ARRL Straight Key Night SARTG New Year RTTY Contest	22 New Year QSO Party Vytautas Magnus Contest (VMC)

Every session in December 208331

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79 sessions across 31 contests; repeats share a row.

Contests starting in December 2083
Contest	Date	Start	End	Duration	Mode	Band	Sponsor	Starts in
A1Club Weekly Test (AWT)5 sessions	Wed 1 DecWed 8 DecWed 15 DecWed 22 DecWed 29 Dec	1145Z1145Z1145Z1145Z1145Z	1300Z1300Z1300Z1300Z1300Z	1h 15m	CW	not recorded	A1 Club	in 20860 daysin 20867 daysin 20874 daysin 20881 daysin 20888 days
CWops Test (CWT)20 sessions	Wed 1 DecWed 1 DecThu 2 DecThu 2 DecWed 8 DecWed 8 DecThu 9 DecThu 9 DecWed 15 DecWed 15 DecThu 16 DecThu 16 DecWed 22 DecWed 22 DecThu 23 DecThu 23 DecWed 29 DecWed 29 DecThu 30 DecThu 30 Dec	1300Z1900Z0300Z0700Z1300Z1900Z0300Z0700Z1300Z1900Z0300Z0700Z1300Z1900Z0300Z0700Z1300Z1900Z0300Z0700Z	1400Z2000Z0400Z0800Z1400Z2000Z0400Z0800Z1400Z2000Z0400Z0800Z1400Z2000Z0400Z0800Z1400Z2000Z0400Z0800Z	1h	CW	160-6m	CWops	in 20860 daysin 20860 daysin 20860 daysin 20861 daysin 20867 daysin 20867 daysin 20867 daysin 20868 daysin 20874 daysin 20874 daysin 20874 daysin 20875 daysin 20881 daysin 20881 daysin 20881 daysin 20882 daysin 20888 daysin 20888 daysin 20888 daysin 20889 days
VHF-UHF FT8 Activity: 144 MHz unverified	Wed 1 Dec	1700Z	2100Z	4h	FT8/FT4	2m	QSO BANAT Association (YO2KQT)	in 20860 days
SKCC Straight Key Sprint Europe (SKSE)	Thu 2 Dec	2000Z	2200Z	2h	CW	160-6m	Straight Key Century Club	in 20861 days
NCCC FT4 Sprint (FT4 NS)5 sessions	Fri 3 DecFri 10 DecFri 17 DecFri 24 DecFri 31 Dec	0100Z0100Z0100Z0100Z0100Z	0130Z0130Z0130Z0130Z0130Z	30m	FT8/FT4FT4	160-6m	Northern California Contest Club (NCCC)	in 20861 daysin 20868 daysin 20875 daysin 20882 daysin 20889 days
NCCC RTTY Sprint (RTTY NS)5 sessions	Fri 3 DecFri 10 DecFri 17 DecFri 24 DecFri 31 Dec	0145Z0145Z0145Z0145Z0145Z	0215Z0215Z0215Z0215Z0215Z	30m	RTTY	160-15m	Northern California Contest Club (NCCC)	in 20861 daysin 20868 daysin 20875 daysin 20882 daysin 20889 days
NCCC Sprint (NS)5 sessions	Fri 3 DecFri 10 DecFri 17 DecFri 24 DecFri 31 Dec	0230Z0230Z0230Z0230Z0230Z	0300Z0300Z0300Z0300Z0300Z	30m	CW	160-15m	Northern California Contest Club (NCCC)	in 20861 daysin 20868 daysin 20875 daysin 20882 daysin 20889 days
K1USN Slow Speed Test (SST)9 sessions	Fri 3 DecMon 6 DecFri 10 DecMon 13 DecFri 17 DecMon 20 DecFri 24 DecMon 27 DecFri 31 Dec	2000Z0000Z2000Z0000Z2000Z0000Z2000Z0000Z2000Z	2100Z0100Z2100Z0100Z2100Z0100Z2100Z0100Z2100Z	1h	CW	160-10m	K1USN Radio Club	in 20862 daysin 20864 daysin 20869 daysin 20871 daysin 20876 daysin 20878 daysin 20883 daysin 20885 daysin 20890 days
ARRL 160-Meter Contest	Fri 3 Dec	2200Z	1559Z Sun 5 Dec	41h 59m	CW	160m	ARRL	in 20862 days
USKA Weihnachtswettbewerb (SSB / Digital) can't enter2 sessions	Sat 4 DecSat 4 Dec	0700Z1000Z	0959Z1059Z	2h 59m59m	SSBRTTYDigitalFT8/FT4PSK31, PSK63	80m/40m	USKA	in 20863 daysin 20863 days
International FT Challenge	Sat 4 Dec	1800Z	2359Z Sun 5 Dec	29h 59m	FT8/FT4FT4, FT8	80-10m	International FT Challenge	in 20863 days
FT Roundup	Sat 4 Dec	1800Z	2359Z Sun 5 Dec	29h 59m	FT8/FT4FT4, FT8	80-10m	RTTY Contesting	in 20863 days
AGCW ZAP Merit Contest (ZMC) unverified4 sessions	Mon 6 DecMon 13 DecMon 20 DecMon 27 Dec	1740Z1740Z1740Z1740Z	1830Z1830Z1830Z1830Z	50m	CW	80m	AGCW-DL	in 20865 daysin 20872 daysin 20879 daysin 20886 days
ARS Spartan Sprint	Tue 7 Dec	0100Z	0300Z	2h	CW	80-10m	Adventure Radio Society	in 20865 days
VHF-UHF FT8 Activity: 432 MHz unverified	Wed 8 Dec	1700Z	2100Z	4h	FT8/FT4	70cm	QSO BANAT Association (YO2KQT)	in 20867 days
ARRL 10-Meter Contest	Sat 11 Dec	0000Z	2359Z Sun 12 Dec	47h 59m	CWSSB	10m	ARRL	in 20869 days
PODXS 070 Club Triple Play Low Band Sprint DOUBLEHEADER	Sat 11 Dec	0000Z	2359Z Mon 13 Dec	71h 59m	DigitalPSK31	160m/80m/40m	PODXS 070 Club	in 20869 days
TRC DIGI Contest	Sat 11 Dec	0600Z	1800Z Sun 12 Dec	36h	RTTY	160-10m	Thracian Rose Club	in 20870 days
USKA Weihnachtswettbewerb (CW / Digital) can't enter2 sessions	Sat 11 DecSat 11 Dec	0700Z1000Z	0959Z1059Z	2h 59m59m	CWRTTYDigitalFT8/FT4PSK31, PSK63	80m/40m	USKA	in 20870 daysin 20870 days
SKCC Weekend Sprintathon (WES)	Sat 11 Dec	1200Z	2359Z Sun 12 Dec	35h 59m	CW	160-6m	Straight Key Century Club	in 20870 days
ARI 40/80 Contest can't enter	Sat 11 Dec	1300Z	1259Z Sun 12 Dec	23h 59m	CWSSBRTTY	80m/40m	ARI	in 20870 days
4 States QRP Group Second Sunday Sprint (SSS)	Mon 13 Dec	0100Z	0300Z	2h	CWSSBDigital	160-10m	4 States QRP Group	in 20871 days
DARC CW-Ausbildungscontest unverified	Tue 14 Dec	1800Z	1859Z	59m	CW	not recorded	DARC	in 20873 days
VHF-UHF FT8 Activity: 1296 MHz unverified	Wed 15 Dec	1700Z	2100Z	4h	DigitalFT8	23cm	QSO BANAT Association (YO2KQT)	in 20874 days
AGB-Party unverified	Fri 17 Dec	1600Z	1700Z	1h	CWSSBDigitalFT8, FT4	80m/40m	AGB	in 20876 days
OK DX RTTY Contest	Sat 18 Dec	0000Z	0000Z Sun 19 Dec	24h	RTTYBaudot	80-10m	CRK	in 20876 days
Croatian DX Contest (9A DX)	Sat 18 Dec	1400Z	1359Z Sun 19 Dec	23h 59m	CWSSB	160-10m	HRS	in 20877 days
ÖVSV VHF/UHF/Microwave Activity Contest	Sun 19 Dec	0700Z	1300Z	6h	CWSSBAMFM	6-3cm	ÖVSV	in 20878 days
ARRL Rookie Roundup, CW	Sun 19 Dec	1800Z	2359Z	5h 59m	CW	80-10m	ARRL	in 20878 days
SKCC Straight Key Sprint (SKS)	Wed 22 Dec	0000Z	0200Z	2h	CW	160-6m	Straight Key Century Club	in 20880 days
DARC Weihnachtswettbewerb (XMAS Contest)	Sun 26 Dec	0830Z	1059Z	2h 29m	CWSSB	80m/40m	DARC	in 20885 days

A1Club Weekly Test (AWT)
CW · A1 Club
- 1145Z Wed 1 Dec → 1300Z · 1h 15min 20860 days
- 1145Z Wed 8 Dec → 1300Z · 1h 15min 20867 days
- 1145Z Wed 15 Dec → 1300Z · 1h 15min 20874 days
- 1145Z Wed 22 Dec → 1300Z · 1h 15min 20881 days
- 1145Z Wed 29 Dec → 1300Z · 1h 15min 20888 days
CWops Test (CWT)
CW · 160-6m · CWops
- 1300Z Wed 1 Dec → 1400Z · 1hin 20860 days
- 1900Z Wed 1 Dec → 2000Z · 1hin 20860 days
- 0300Z Thu 2 Dec → 0400Z · 1hin 20860 days
- 0700Z Thu 2 Dec → 0800Z · 1hin 20861 days
- 1300Z Wed 8 Dec → 1400Z · 1hin 20867 days
- 1900Z Wed 8 Dec → 2000Z · 1hin 20867 days
- 0300Z Thu 9 Dec → 0400Z · 1hin 20867 days
- 0700Z Thu 9 Dec → 0800Z · 1hin 20868 days
- 1300Z Wed 15 Dec → 1400Z · 1hin 20874 days
- 1900Z Wed 15 Dec → 2000Z · 1hin 20874 days
- 0300Z Thu 16 Dec → 0400Z · 1hin 20874 days
- 0700Z Thu 16 Dec → 0800Z · 1hin 20875 days
- 1300Z Wed 22 Dec → 1400Z · 1hin 20881 days
- 1900Z Wed 22 Dec → 2000Z · 1hin 20881 days
- 0300Z Thu 23 Dec → 0400Z · 1hin 20881 days
- 0700Z Thu 23 Dec → 0800Z · 1hin 20882 days
- 1300Z Wed 29 Dec → 1400Z · 1hin 20888 days
- 1900Z Wed 29 Dec → 2000Z · 1hin 20888 days
- 0300Z Thu 30 Dec → 0400Z · 1hin 20888 days
- 0700Z Thu 30 Dec → 0800Z · 1hin 20889 days
VHF-UHF FT8 Activity: 144 MHz unverified
FT8/FT4 · 2m · QSO BANAT Association (YO2KQT)
- 1700Z Wed 1 Dec → 2100Z · 4hin 20860 days
SKCC Straight Key Sprint Europe (SKSE)
CW · 160-6m · Straight Key Century Club
- 2000Z Thu 2 Dec → 2200Z · 2hin 20861 days
NCCC FT4 Sprint (FT4 NS)
FT8/FT4FT4 · 160-6m · Northern California Contest Club (NCCC)
- 0100Z Fri 3 Dec → 0130Z · 30min 20861 days
- 0100Z Fri 10 Dec → 0130Z · 30min 20868 days
- 0100Z Fri 17 Dec → 0130Z · 30min 20875 days
- 0100Z Fri 24 Dec → 0130Z · 30min 20882 days
- 0100Z Fri 31 Dec → 0130Z · 30min 20889 days
NCCC RTTY Sprint (RTTY NS)
RTTY · 160-15m · Northern California Contest Club (NCCC)
- 0145Z Fri 3 Dec → 0215Z · 30min 20861 days
- 0145Z Fri 10 Dec → 0215Z · 30min 20868 days
- 0145Z Fri 17 Dec → 0215Z · 30min 20875 days
- 0145Z Fri 24 Dec → 0215Z · 30min 20882 days
- 0145Z Fri 31 Dec → 0215Z · 30min 20889 days
NCCC Sprint (NS)
CW · 160-15m · Northern California Contest Club (NCCC)
- 0230Z Fri 3 Dec → 0300Z · 30min 20861 days
- 0230Z Fri 10 Dec → 0300Z · 30min 20868 days
- 0230Z Fri 17 Dec → 0300Z · 30min 20875 days
- 0230Z Fri 24 Dec → 0300Z · 30min 20882 days
- 0230Z Fri 31 Dec → 0300Z · 30min 20889 days
K1USN Slow Speed Test (SST)
CW · 160-10m · K1USN Radio Club
- 2000Z Fri 3 Dec → 2100Z · 1hin 20862 days
- 0000Z Mon 6 Dec → 0100Z · 1hin 20864 days
- 2000Z Fri 10 Dec → 2100Z · 1hin 20869 days
- 0000Z Mon 13 Dec → 0100Z · 1hin 20871 days
- 2000Z Fri 17 Dec → 2100Z · 1hin 20876 days
- 0000Z Mon 20 Dec → 0100Z · 1hin 20878 days
- 2000Z Fri 24 Dec → 2100Z · 1hin 20883 days
- 0000Z Mon 27 Dec → 0100Z · 1hin 20885 days
- 2000Z Fri 31 Dec → 2100Z · 1hin 20890 days
ARRL 160-Meter Contest
CW · 160m · ARRL
- 2200Z Fri 3 Dec → 1559Z Sun 5 Dec · 41h 59min 20862 days
USKA Weihnachtswettbewerb (SSB / Digital) can't enter
SSBRTTYDigitalFT8/FT4PSK31, PSK63 · 80m/40m · USKA
- 0700Z Sat 4 Dec → 0959Z · 2h 59min 20863 days
- 1000Z Sat 4 Dec → 1059Z · 59min 20863 days
International FT Challenge
FT8/FT4FT4, FT8 · 80-10m · International FT Challenge
- 1800Z Sat 4 Dec → 2359Z Sun 5 Dec · 29h 59min 20863 days
FT Roundup
FT8/FT4FT4, FT8 · 80-10m · RTTY Contesting
- 1800Z Sat 4 Dec → 2359Z Sun 5 Dec · 29h 59min 20863 days
AGCW ZAP Merit Contest (ZMC) unverified
CW · 80m · AGCW-DL
- 1740Z Mon 6 Dec → 1830Z · 50min 20865 days
- 1740Z Mon 13 Dec → 1830Z · 50min 20872 days
- 1740Z Mon 20 Dec → 1830Z · 50min 20879 days
- 1740Z Mon 27 Dec → 1830Z · 50min 20886 days
ARS Spartan Sprint
CW · 80-10m · Adventure Radio Society
- 0100Z Tue 7 Dec → 0300Z · 2hin 20865 days
VHF-UHF FT8 Activity: 432 MHz unverified
FT8/FT4 · 70cm · QSO BANAT Association (YO2KQT)
- 1700Z Wed 8 Dec → 2100Z · 4hin 20867 days
ARRL 10-Meter Contest
CWSSB · 10m · ARRL
- 0000Z Sat 11 Dec → 2359Z Sun 12 Dec · 47h 59min 20869 days
PODXS 070 Club Triple Play Low Band Sprint DOUBLEHEADER
DigitalPSK31 · 160m/80m/40m · PODXS 070 Club
- 0000Z Sat 11 Dec → 2359Z Mon 13 Dec · 71h 59min 20869 days
TRC DIGI Contest
RTTY · 160-10m · Thracian Rose Club
- 0600Z Sat 11 Dec → 1800Z Sun 12 Dec · 36hin 20870 days
USKA Weihnachtswettbewerb (CW / Digital) can't enter
CWRTTYDigitalFT8/FT4PSK31, PSK63 · 80m/40m · USKA
- 0700Z Sat 11 Dec → 0959Z · 2h 59min 20870 days
- 1000Z Sat 11 Dec → 1059Z · 59min 20870 days
SKCC Weekend Sprintathon (WES)
CW · 160-6m · Straight Key Century Club
- 1200Z Sat 11 Dec → 2359Z Sun 12 Dec · 35h 59min 20870 days
ARI 40/80 Contest can't enter
CWSSBRTTY · 80m/40m · ARI
- 1300Z Sat 11 Dec → 1259Z Sun 12 Dec · 23h 59min 20870 days
4 States QRP Group Second Sunday Sprint (SSS)
CWSSBDigital · 160-10m · 4 States QRP Group
- 0100Z Mon 13 Dec → 0300Z · 2hin 20871 days
DARC CW-Ausbildungscontest unverified
CW · DARC
- 1800Z Tue 14 Dec → 1859Z · 59min 20873 days
VHF-UHF FT8 Activity: 1296 MHz unverified
DigitalFT8 · 23cm · QSO BANAT Association (YO2KQT)
- 1700Z Wed 15 Dec → 2100Z · 4hin 20874 days
AGB-Party unverified
CWSSBDigitalFT8, FT4 · 80m/40m · AGB
- 1600Z Fri 17 Dec → 1700Z · 1hin 20876 days
OK DX RTTY Contest
RTTYBaudot · 80-10m · CRK
- 0000Z Sat 18 Dec → 0000Z Sun 19 Dec · 24hin 20876 days
Croatian DX Contest (9A DX)
CWSSB · 160-10m · HRS
- 1400Z Sat 18 Dec → 1359Z Sun 19 Dec · 23h 59min 20877 days
ÖVSV VHF/UHF/Microwave Activity Contest
CWSSBAMFM · 6-3cm · ÖVSV
- 0700Z Sun 19 Dec → 1300Z · 6hin 20878 days
ARRL Rookie Roundup, CW
CW · 80-10m · ARRL
- 1800Z Sun 19 Dec → 2359Z · 5h 59min 20878 days
SKCC Straight Key Sprint (SKS)
CW · 160-6m · Straight Key Century Club
- 0000Z Wed 22 Dec → 0200Z · 2hin 20880 days
DARC Weihnachtswettbewerb (XMAS Contest)
CWSSB · 80m/40m · DARC
- 0830Z Sun 26 Dec → 1059Z · 2h 29min 20885 days

December 2083

Every session in December 208331

VHF-UHF FT8 Activity: 144 MHz unverified

USKA Weihnachtswettbewerb (SSB / Digital) can't enter

AGCW ZAP Merit Contest (ZMC) unverified

VHF-UHF FT8 Activity: 432 MHz unverified

USKA Weihnachtswettbewerb (CW / Digital) can't enter

ARI 40/80 Contest can't enter

DARC CW-Ausbildungscontest unverified

VHF-UHF FT8 Activity: 1296 MHz unverified

AGB-Party unverified