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--- | --- | --- | --- | --- | --- |\n| WK | Monday | CMS Meetings |  |  |  |  |  | WK | Monday | CMS Meetings |  |  |  |  |  |\n|  |  | M | T | W | T | F |  |  |  | M | T | W | T | F |  |\n| 1 | 29.Dec |  |  |  |  |  | CERN closed (22 Dec 25-4 Jan 26) | 27 | 29.Jun |  |  |  |  |  | School hols (29 Jun-CH) |\n| 2 | 05.Jan |  |  |  |  |  |  | 28 | 6.Jul |  |  |  |  |  | School hols (4 Jul-FR) |\n| 3 | 12.Jan |  |  |  |  |  |  | 29 | 13.Jul |  |  |  |  |  |  |\n| 4 | 19.Jan |  |  |  |  |  |  | 30 | 20.Jul | MB | FB |  |  |  |  |\n| 5 | 26.Jan | MB | FB |  |  |  |  | 31 | 27.Jul |  |  |  |  |  | ICHEP (30 July-05 Aug) |\n| 6 | 2.Feb |  |  |  |  |  |  | 32 | 3.Aug |  |  |  |  |  |  |\n| 7 | 9.Feb | CMS Week |  |  |  |  | School hols (7 Feb-22 Feb FR) | 33 | 10.Aug |  |  |  |  |  |  |\n| 8 | 16.Feb |  |  |  |  |  | ATALS wk, School hols (7 Feb-22 Feb FR) | 34 | 17.Aug |  |  |  |  |  |  |\n| 9 | 23.Feb |  |  |  |  |  | School hols (23 Feb-27 Feb CH) | 35 | 24.Aug |  |  |  |  |  |  |\n| 10 | 2.Mar | LHCC |  |  |  |  |  | 36 | 31.Aug | LHCC |  |  |  |  |  |\n| 11 | 09.Mar | MB | FB |  |  |  |  | 37 | 7.Sep | MB | FB |  | Jeûne G |  | CERN Closed (10) |\n| 12 | 16.Mar |  |  |  |  |  |  | 38 | 14.Sep |  |  |  |  |  |  |\n| 13 | 23.Mar |  |  |  |  |  | Council wk-SPC(23-24), FC(25), RC(26), CC(27), Moriond/EW-TBC, | 39 | 21.Sep |  |  |  |  |  | Council wk-SPC(21-22), FC(23), RC(24), CC(25) |\n| 14 | 30.Mar |  |  |  |  | Good Friday | CERN Closed (3), Moriond/QCD-TBC | 40 | 28.Sep | CMS Week |  |  |  |  |  |\n| 15 | 6.Apr | Easter Monday |  |  |  |  | CERN Closed (6), School hols (4 Apr-19 Apr FR),(6 Apr-17 Apr CH) | 41 | 5.Oct |  |  |  |  |  |  |\n| 16 | 13.Apr | CMS Week |  |  |  |  | School hols (4 Apr-19 Apr FR),(6 Apr-17 Apr CH) | 42 | 12.Oct | MB | FB |  |  |  | ATLAS wk |\n| 17 | 20.Apr | MB/FB |  |  |  |  |  | 43 | 19.Oct | MB/FB |  |  |  |  | School hols TBC (17 Oct-1 Nov FR) (19-23 CH) |\n| 18 | 27.Apr | RRB |  |  |  | May 1st | CERN Closed (1) | 44 | 26.Oct | RRB-TBC |  |  |  |  | School hols TBC (17 Oct-1 Nov FR) |\n| 19 | 4.May |  |  |  |  |  |  | 45 | 2.Nov |  |  |  |  |  |  |\n| 20 | 11.May |  |  |  | Ascension |  | CERN Closed (14), Council wk-SPC(11), FC(12) | 46 | 9.Nov |  |  |  |  |  |  |\n| 21 | 18.May | MB | FB |  |  |  | LHCP Paris (18-22), | 47 | 16.Nov | LHCC |  |  |  |  |  |\n| 22 | 25.May | Whit Monday |  |  |  |  | CERN Closed (25), Council -RC(29), 28th CHEP (25 May-29 May) | 48 | 23.Nov |  |  |  |  |  |  |\n| 23 | 1.Jun | LHCC |  |  |  |  |  | 49 | 30.Nov | MB | FB |  |  |  |  |\n| 24 | 8.Jun | CMS week |  |  |  |  |  | 50 | 7.Dec | CMS Week (Mexico) |  |  |  |  | Council wk-SPC(7-8), FC(9), RC/CC(10), RCS(11) |\n| 25 | 15.Jun |  |  |  |  |  | ATALS WK | 51 | 14.Dec |  |  |  |  |  |  |\n| 26 | 22.Jun | MB | FB |  |  |  | Council wk-SPC(22-23), FC(24), RC/CC(25), OC(26) | 52 | 21.Dec |  |  |  |  |  | CERN Closed (21 Dec-3 Jan 2027) |\n|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |\n\nLHCC-LHC Committee  \nSG-LHC resources Scrutiny Group  \nRRB-LHC Resources Review Boards (CERN Director of Research)  \nSPC-Scientific Policy Committee (attended by Chairpersons if INTC, LHCC, SPSC)  \nFC-Finance Committee  \nRCS-Restricted and Closed Council Meetings  \nRC-Restricted Council  \nCC-Closed Council  \nOCS-Open Council  \nESM-Restricted Council-European Strategy matters  \nREC-Recognized Experiments Committee (CERN Director of Research) (attended by Chairpersons if INTC, SPSC) OCS-Open Council  \nESM-Restricted Council-European Strategy matters  \nREC-Recognized Experiments Committee (CERN Director of Research) (attended by Chairpersons if INTC, SPSC)","cbCaiqI4ZDXHZifO","https://ap.wps.com/l/cbCaiqI4ZDXHZifO","pdf",72781,"English","# Calendar overview\n## Key holidays and closures\n## CMS meetings and committee events","[{\"question\":\"What kinds of dates does the CMS Calendar 2026 include?\",\"answer\":\"It includes weekly CMS meetings, CERN closure periods, school holiday ranges, and major religious/observance days, alongside scheduled committee and policy-related event blocks.\"},{\"question\":\"How are CERN closure dates presented in the calendar?\",\"answer\":\"They are explicitly marked on relevant weeks using phrases like “CERN closed” followed by the date range for the closure.\"},{\"question\":\"Which committee and institutional meetings are referenced in the calendar?\",\"answer\":\"The calendar references multiple committees and council meeting types through coded abbreviations, including finance, scientific policy, restricted/closed councils, and recognized-experiments review bodies.\"}]","CMS Calendar 2026 - Weekly meetings and key dates | PDF"]