The Boston Celtics have an 11-12 record on January 1 all-time.

	TEAM	DATE	REC	TM		OPP	RESULT	W%	MIN	PTS	REB	AST	STL	BLK	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	TS%	OREB	DREB	TOV	PF
1	Celtics	1/1/1948	0-1	BOS	@	STL	L 48-58	.000	240	48					20						8
2	Celtics	1/1/1949	0-1	BOS	@	BAL	L 67-72	.000	240	67					24						19	29	65.5
3	Celtics	1/1/1950	0-1	BOS	@	FTW	L 72-80	.000	240	72					25						22	30	73.3					31
4	Celtics	1/1/1951	0-1	BOS	@	SYR	L 89-106	.000	240	89					32						25	37	67.6
5	Celtics	1/1/1952	0-1	BOS	@	ROC	L 91-106	.000	240	91					30						31	42	73.8					24
6	Celtics	1/1/1953	1-0	BOS	@	ROC	W 83-81	1.000	265	83					26						31	37	83.8					28
7	Celtics	1/1/1954	1-0	BOS	vs	SYR	W 95-92	1.000	240	95		20			30	80	37.5				35	48	72.9	47.0				31
8	Celtics	1/1/1955	0-1	BOS	@	SYR	L 102-108	.000	240	102	52	28			34	75	45.3				34	42	81.0	54.6				32
9	Celtics	1/1/1956	1-0	BOS	vs	PHI	W 121-113	1.000	240	121	65	35			44	93	47.3				33	45	73.3	53.6				25
10	Celtics	1/1/1957	1-0	BOS		PHI	W 100-87	1.000	240	100	56	16			40	93	43.0				20	26	76.9	47.9				25
11	Celtics	1/1/1960	0-1	BOS		CIN	L 115-128	.000	240	115	66				44						27	38	71.1					25
12	Celtics	1/1/1961	1-0	BOS	@	SYR	W 113-96	1.000	240	113					45						23	35	65.7					27
13	Celtics	1/1/1966	0-1	BOS	@	STL	L 98-100	.000	240	98	57	15			37	100	37.0				24	30	80.0	43.3				27
14	Celtics	1/1/1967	0-1	BOS	@	LAL	L 110-111	.000	240	110	58	25			40	96	41.7				30	36	83.3	49.2				23
15	Celtics	1/1/1969	1-0	BOS	@	PHX	W 93-87	1.000	240	93	57	27			36	99	36.4				21	31	67.7	41.3				26
16	Celtics	1/1/1972	0-1	BOS	@	PHX	L 104-114	.000	240	104	49	22			37	93	39.8				30	41	73.2	46.8				34
17	Celtics	1/1/1975	1-0	BOS	@	POR	W 108-94	1.000	240	108	52	36	15	2	47	108	43.5				14	17	82.4	46.8	17	35		25
18	Celtics	1/1/1981	1-0	BOS	@	SDC	W 88-85	1.000	240	88	38	20	8	9	33	71	46.5	1	3	33.3	21	32	65.6	51.7			22	22
19	Celtics	1/1/1983	1-0	BOS	@	UTA	W 127-112	1.000	240	127	55	31		4	52	105	49.5	0	1	0.0	23	32	71.9	53.3			14	25
20	Celtics	1/1/2007	1-0	BOS	@	POR	W 89-81	1.000	240	89	42	13	6	1	32	73	43.8	2	4	50.0	23	27	85.2	52.4	10	32	16	22
21	Celtics	1/1/2012	1-0	BOS	@	WAS	W 94-86	1.000	240	94	41	26	7	5	37	74	50.0	5	12	41.7	15	23	65.2	55.9	8	33	16	20
22	Celtics	1/1/2021	0-1	BOS	@	DET	L 93-96	.000	240	93	44	20	12	11	39	83	47.0	8	31	25.8	7	14	50.0	52.2	7	37	19	20
23	Celtics	1/1/2023	0-1	BOS	@	DEN	L 111-123	.000	240	111	41	30	8	3	40	87	46.0	9	33	27.3	22	27	81.5	56.1	10	31	13	15
	Average							.478	241.1	96.1				5.0	35.8			4.2	14.0	29.8	23.4
	Total		11-12					.478	5,545	2,211				35	824			25	84	29.8	538