	A	B	C	D	E	F	G	H	I	J	K	L	M	N	O	P	Q	R	S	T	U	V	W	X	Y	Z	AA	AB	AC	AD	AE	AF	AG	AH
1											Gemini South Semester 2021A
2
3	The semester calendar shows multi-instrument queue nights, priority visitor nights, scheduled classical runs and engineering or commissioning blocks.
4	Horizontal rows represent instrument ports, color-coded to indicate instruments mounted. Instruments are available for science unless otherwise noted.
5	Note: ToO PIs should always check the "what's available now" pages that are linked from the contents list for the most up-to-date information.
6	Scheduled classical runs are indicated by the last characters of the program ID, e.g., "C-1", whilst Priority Visitor programs are indicated with "PV".
7	Engineering or commissioning blocks are shown across all rows when no backup queue is available (or telescope is closed).
8	New and full moon dates are shown on the left and indicated in yellow and grey on the dates lines. Dates above each month are color-coded to show weekends and holidays in red.
9
10	Key:		GMOS					F2				visiting instr					Canopus					GSAOI					GPI				Cal unit
11
12
13			1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28
14	February	Port 1 - up	IGRINS																															February
15	27 full Moon	Port 2	cal / Zorro																							Zorro science block								27 full Moon
16	11 new Moon	Port 3	GMOS											schedule may be subject to change due to COVID-19																				11 new Moon
17		Port 4	Canopus
18		Port 5																		F2
19
20
21			1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
22	March	Port 1 - up	IGRINS																															March
23	28 full Moon	Port 2	cal / Zorro																															28 full Moon
24	13 new Moon	Port 3	GMOS					schedule may be subject to change due to COVID-19																		Telescope maintenance shutdown								13 new Moon
25		Port 4	Canopus
26		Port 5	F2
27
28
29			1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
30	April	Port 1 - up	IGRINS																															April
31	26 full Moon	Port 2	cal / Zorro																															26 full Moon
32	11 new Moon	Port 3	GMOS											schedule may be subject to change due to COVID-19																				11 new Moon
33		Port 4	Canopus
34		Port 5	F2																C1			C1						C1
35
36
37			1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
38	May	Port 1 - up	IGRINS																															May
39	26 full Moon	Port 2	cal / Zorro																															26 full Moon
40	11 new Moon	Port 3	GMOS											schedule may be subject to change due to COVID-19																				11 new Moon
41		Port 4	Canopus
42		Port 5	F2					C1																						C1
43
44
45			1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
46	June	Port 1 - up	IGRINS		GSAOI																			GeMS/GSAOI laser run							IGRINS			June
47	24 full Moon	Port 2	cal / Zorro																															24 full Moon
48	10 new Moon	Port 3	GMOS											schedule may be subject to change due to COVID-19																				10 new Moon
49		Port 4	Canopus
50		Port 5	F2
51
52
53			1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
54	July	Port 1 - up	IGRINS												GSAOI														GeMS/GSAOI laser run					July
55	23 full Moon	Port 2	cal / Zorro																		Zorro science block													23 full Moon
56	9 new Moon	Port 3	GMOS											schedule may be subject to change due to COVID-19																				9 new Moon
57		Port 4	Canopus
58		Port 5	F2															C1
59
60	version: 13 May 2021