The first season of the Elves' year, immediately following yestarë, the first day of the year, which did not belong to any season. Tuilë covered a period of fifty-four days, between modern 29 March and 21 May. Tuilë was the Quenya name for this season; the Sindar called it Ethuil; both names derived from an ancient Elvish element tuy- meaning 'to spring or sprout'. From the same origin came the Quenya word tuilindo, literally 'spring-singer' (known in English as the swallow) which returned to the northern lands during the season of tuilë.
Notes
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Tuilë is conventionally translated 'spring', but for the Elves, spring in fact consisted of two separate seasons. The first was Coirë, 'stirring', while Tuilë, literally 'budding' represented the second, later part of spring that ran from March to May on a modern calendar.