biennial, biannual, quinquennial, annual, general synod, triennium, quadrennial, semiannual, yearly, synod, decennial, eucharist, conciliar, chronogram, synodical, jubilee, plenary, silver jubilee, prag, lambeth conference, quorate, lateran, moas, diamond jubilee, revision, ncos, centenary, vestries, stocktaking, colloquium, working group, statutory, ministerial, congress, convenes, consultative, nast, cospar, quincentenary, whitsuntide, presbyteries, augsburg confession, convention, bimonthly, ecumenical, raia, primatial, preparatory, decadal, intergovernmental, wipo, folketing, chalcedon, saengerfest, scrutinies, canticum, eastertide, ilia, icel, diocesan, cpia, storting, meeting, quasquicentennial, quarterly, catechumens, conclave, tripartite, canonisation, polycentric, baft, congregational, ulrich zwingli, delegates, wango, quincentennial, episcopal, rosarium, ecclesia, ramanavami, saint brigid, unesco, catechetical, negara brunei darussalam, qef, retrospective, ursi, intertraffic, pbo, electrotechnology, workshop, benchmarking, exposition, tricentennial, bishops, reassessment, harmonisation, trialogue, inquorate, mafa, catechetical instruction, tercentenary, amendment, birthdays, canto, centuries, earl, instant, avenue, birthday, cen, centnry, centurv, century, century1, edit, fairway, inclusive, inning, inst, septennial, fortnightly, forthcoming, followup, periodical, multiyear, weeklong, biweekly, monthly, periodic, weekly

anniversary, day of remembrance

tercentenary, tercentennial