GTC Calendar Viewer

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Current date is 9 Dec 2025, time 16:26:08
Note that future months may be subject to changes.

Overview schedule for December 2025, Semester 2025B

Day Moon Programme PI Instrument
1 Monillum: 0.87 Brightqueue programOSIRIS + EMIR + HIPERCAM
2 Tueillum: 0.94 BrightcommissioningOSIRIS + EMIR + HIPERCAM
3 Wedillum: 0.98 BrightcommissioningOSIRIS + EMIR + HIPERCAM
4 Thuillum: 1 BrightcommissioningOSIRIS + EMIR + HIPERCAM
5 Friillum: 0.98 Brightqueue programOSIRIS + EMIR + HIPERCAM
6 Satillum: 0.94 Brightqueue programOSIRIS + EMIR + HIPERCAM
7 Sunillum: 0.87 Brightqueue programOSIRIS + EMIR + HIPERCAM
8 Monillum: 0.78 Brightqueue programOSIRIS + EMIR + HIPERCAM
9 Tueillum: 0.68 BrightcommissioningOSIRIS + EMIR + HIPERCAM
10 Wedillum: 0.58 LastcommissioningOSIRIS + EMIR + HIPERCAM
11 Thuillum: 0.48 Lastqueue programOSIRIS + EMIR + HIPERCAM
12 Friillum: 0.38 Lastqueue programOSIRIS + EMIR + HIPERCAM
13 Satillum: 0.29 Lastqueue programOSIRIS + EMIR + HIPERCAM
14 Sunillum: 0.21 DarkGTC2-25BFLOHansenHIPERCAM
15 Monillum: 0.14 Darkqueue programOSIRIS + EMIR + HIPERCAM
16 Tueillum: 0.08 Darkqueue programOSIRIS + EMIR + HIPERCAM
17 Wedillum: 0.04 Darkqueue programOSIRIS + EMIR + HIPERCAM
18 Thuillum: 0.01 Darkqueue programOSIRIS + EMIR + HIPERCAM
19 Friillum: 0 Darkqueue programOSIRIS + EMIR + HIPERCAM
20 Satillum: 0.01 Darkqueue programOSIRIS + EMIR + HIPERCAM
21 Sunillum: 0.03 Darkqueue programOSIRIS + EMIR + HIPERCAM
22 Monillum: 0.08 Darkqueue programOSIRIS + EMIR + HIPERCAM
23 Tueillum: 0.14 Darkqueue programOSIRIS + EMIR + HIPERCAM
24 Wedillum: 0.21 Darkqueue programOSIRIS + EMIR + HIPERCAM
25 Thuillum: 0.31 Firstqueue programOSIRIS + EMIR + HIPERCAM
26 Friillum: 0.41 Firstqueue programOSIRIS + EMIR + HIPERCAM
27 Satillum: 0.52 Firstqueue programOSIRIS + EMIR + HIPERCAM
28 Sunillum: 0.63 Firstqueue programOSIRIS + EMIR + HIPERCAM
29 Monillum: 0.73 Brightqueue programOSIRIS + EMIR + HIPERCAM
30 Tueillum: 0.83 Brightqueue programOSIRIS + EMIR + HIPERCAM
31 Wedillum: 0.91 Brightqueue programOSIRIS + EMIR + HIPERCAM

Notes:
  • Day: Green=local public holiday; Yellow=current day; Orange: weekend.
  • Moon: Last=grey night, and dark first part of night; First= grey night, and dark last part of night.