In American colleges and universities, a day of the commencement season on which the senior class celebrates the completion of its course by exercises conducted by the members, such as the reading of the class histories and poem, the delivery of the class oration, the planting of the class ivy, etc. [Webster 1913 Suppl.]

1st class, admission day, age class, all day long, all fools' day, all saints' day, all souls' day, american indian day, annunciation day, april fools' day, arbor day, armed forces day, armistice day, art class, ascension day, bastille day, biology class, bissextile day, boxing day, break of day, break of the day, by the day, cabin class, calendar day, call it a day, candlemas day, chemistry class, childbirth-preparation class, childermas day, christian holy day, christmas day, citizenship day, civil day, clarence day, clarence shepard day jr., class, class acrasiomycetes, class act, class actinozoa, class action, class amphibia, class angiospermae, class anthoceropsida, class anthozoa, class aphasmidia, class arachnida, class archiannelida, class ascidiaceae, class ascomycetes, class asteroidea, class aves, class bacillariophyceae, class basidiomycetes, class bivalvia, class bryopsida, class cephalopoda, class cestoda, class channidae, class charophyceae, class chilopoda, class chlorophyceae, class chondrichthyes, class chrysophyceae, class chytridiomycetes, class ciliata, class ciliophora, class coniferopsida, class crinoidea, class crustacea, class cryptophyceae, class cyanobacteria, class cyanophyceae, class cycadopsida, class cyclosporeae, class deuteromycetes, class diatomophyceae, class dicotyledonae, class dicotyledones, class diplopoda, class echinoidea, class equisetatae, class euglenophyceae, class eumycetes, class feeling, class fellow, class filicinae, class filicopsida, class flagellata, class gasteromycetes, class gasteropoda, class gastromycetes, class gastropoda, class ginkgophytina, class ginkgopsida, class gnetopsida, class gymnospermae, class hemiascomycetes, class hepaticae, class hepaticopsida, class heterokontae, class hexapoda, class hirudinea, class holothuroidea, class hyalospongiae, class hydrozoa, class hymenomycetes, class insecta, class lamellibranchia, class larvacea, class liliopsida, class list, class lycopodiate, class lycopodineae, class lycopsida, class magnoliopsida, class mammalia, class mastigophora, class merostomata, class monocotyledonae, class monocotyledones, class musci, class myriapoda, class myxomycetes, class nuda, class oligochaeta, class onychophora, class oomycetes, class ophiuroidea, class osteichthyes, class pauropoda, class pelecypoda, class period, class phaeophyceae, class phasmidia, class pinopsida, class placodermi, class plectomycetes, class polychaeta, class polyplacophora, class psilopsida, class psilotatae, class pteridospermopsida, class pyrenomycetes, class reptilia, class rhodophyceae, class sarcodina, class scaphopoda, class schizomycetes, class scyphozoa, class sphenopsida, class sporozoa, class structure, class struggle, class symphyla, class tardigrada, class taxopsida, class tentaculata, class thaliacea, class tiliomycetes, class trematoda, class turbellaria, class ulvophyceae, class war, class warfare, class xanthophyceae, class zygomycetes, columbus day, commencement day, commonwealth day, day, day after day, day bed, day blindness, day boarder, day book, day by day, day camp, day care, day care center, day game, day in and day out, day in day out, day jessamine, day laborer, day labourer, day lily, day nursery, day of atonement, day of judgement, day of judgment, day of reckoning, day of remembrance, day of rest, day of the month, day of the week, day off, day return, day school, day shift, day watch, decoration day, degree day, discovery day, dominion day, each day, easter day, election day, ember day, empire day, english class, every day, fast day, father's day, feast day, fete day, field day, first class, flag day, forever and a day, form class, fourth class, freshman class, future day, gain the day, good day, graduating class, groundhog day, guy fawkes day, high holy day, holy day, holy day of obligation, holy innocents' day, immigrant class, inauguration day, independence day, innocents' day, jewish holy day, judgement day, judgment day, junior class, labor day, lady day, lammas day, last day, leap day, leisure class, life class, lord's day, low class, lower class, lunar day, major fast day, major form class, market day, martin luther king day, master class, may day, mean solar day, memorial day, michaelmas day, middle class, midsummer day, midsummer's day, minor fast day, mother's day, naked as the day one was born, naked as the day you were born, name day, natal day, new year's day, night and day, order of the day, pan american day, pancake day, patriot's day, patriots' day, physics class, pioneers' day, polling day, poppy day, present day, presidents' day, quarter day, rag day, rainy day, red-letter day, remembrance day, rest day, robert e lee day, rogation day, ruling class, saint patrick's day, saint valentine's day, saint's day, school day, second class, seize the day, senior class, sergeant first class, shop class, sidereal day, six day war, social class, socio-economic class, solar day, sophomore class, speech day, st john's day, st martin's day, st patrick's day, st valentine's day, substitution class, sunday school class, tag day, term day, texas independence day, thanksgiving day, third class, three kings' day, time of day, tourist class, transfiguration day, twelfth day, united nations day, unlucky day, upper class, v-e day, v-j day, valentine day, valentine's day, veterans day, veterans' day, victoria day, victory day, washing day, wedding day, word class, work day, working class, working day