What do my subjects keep open?

closedJEE MainNeeds: Physics, Mathematics closedJEE AdvancedNeeds: Physics, Chemistry, Mathematics closedNEET UGNeeds: Physics, Chemistry, Biology partlyCUET UGOnce a year, usually May to June, with results in July. openCLATOnce a year, usually in December, for admission the next academic year. openAILETOnce a year, usually in December. partlyNDA & NA ExaminationTwice a year, usually April and September; notifications come out around December and May. closedNATANeeds: Physics, Chemistry, Mathematics openUCEEDOnce a year, usually in January. openNID DATPrelims are usually in December or January; Mains follow in April or May. partlyNIFT EntranceOnce a year, usually in February. partlyCA FoundationHeld more than once a year; recent cycles were in January, May or June and September. Registration closes about four months before the exam. partlyCSEETFour times a year (January, May, July and November). partlyCMA FoundationTwice a year, usually June and December. partlyIPMATOnce a year, usually in May. partlyBBA entrance tests (NPAT, SET, CUET and others)Mostly between January and June. closedICAR AIEEA UGNeeds: Physics, Chemistry closedNCHM JEENeeds: English Core closedIMU CETNeeds: Physics, Chemistry, Mathematics closedCommercial Pilot Licence (DGCA requirements)Needs: Physics, Mathematics closedIISER Aptitude Test (IAT)Needs: Physics, Chemistry closedNESTNeeds: Physics, Chemistry closedISI and CMI entranceNeeds: Mathematics closedState engineering and medical CETsNeeds: Physics, Chemistry openNCET (ITEP)Once a year, usually in May or June. partlyScience and Mathematics OlympiadsIOQ is usually in January or February; camps run from April to June.