The Númenóreans retained the dedications and order, but altered the fourth day to Aldëa (Orgaladh) with reference to the White Tree only, of which Nimloth that grew in the King’s Court in Númenor was believed to be a descendant. Also desiring a seventh day, and being great mariners, they inserted a ‘Sea-day’, Eärenya (Oraearon), after the Heavens’ Day.
The Hobbits took over this arrangement, but the meanings of their translated names were soon forgotten, or no longer attended to, and the forms were much reduced, especially in everyday pronunciation. The first translation of the Númenórean names was probably made two thousand years or more before the end of the Third Age, when the week of the Dúnedain (the feature of their reckoning earliest adopted by alien peoples) was taken up by Men in the North. As with their names of months, the Hobbits adhered to these translations, although elsewhere in the Westron area the Quenya names were used.
Not many ancient documents were preserved in the Shire. At the end of the Third Age far the most notable survival was Yellowskin, or the Yearbook of Tuckborough. 1 Its earliest entries seem to have begun at least nine hundred years before Frodo’s time; and many are cited in the Red Book annals and genealogies. In these the weekday names appear in archaic forms, of which the following are the oldest: (1) Sterrendei, (2) Sunnendei, (3) Monendei, (4) Trewesdei, (5) Hevenesdei, (6) Meresdei, (7) Hihdei. In the language of the time of the War of the Ring these had become Sterday, Sunday, Monday, Trewsday, Hevensday (or Hensday), Mersday, Highday.
I have translated these names also into our own names, naturally beginning with Sunday and Monday, which occur in the Shire week with the same names as ours, and re-naming the others in order. It must be noted, however, that the associations of the names were quite different in the Shire. The last day of the week, Friday (Highday), was the chief day, and one of holiday (after noon) and evening feasts. Saturday thus corresponds more nearly to our Monday, and Thursday to our Saturday. 2
A few other names may be mentioned that have a reference to time, though not used in precise reckonings. The seasons usually named were tuilë spring, lairë summer, yávië autumn (or harvest), hrívë winter; but these had no exact definitions, and quelle (or lasselanta) was also used for the latter part of autumn and the beginning of winter.
The Eldar paid special attention to the ‘twilight’ (in the northerly regions), chiefly as the times of star-fading and star-opening. They had many names for these periods, of which the most usual were tindómë and undómë; the former most often referred to the time near dawn, and undómë to the evening. The Sindarin name was uial, which could be defined as minuial and aduial. These were often called in the Shire morrowdim and evendim. Cf. Lake Evendim as a translation of Nenuial.
The Shire Reckoning and dates are the only ones of importance for the narrative of the War of the Ring. All the days, months, and dates are in the Red Book translated into Shire terms, or equated with them in notes. The months and days, therefore, throughout The Lord of the Rings refer to the Shire Calendar. The only points in which the differences between this and our calendar are important to the story at the crucial period, the end of 3018 and the beginning of 3019 (S.R. 1418, 1419), are these: October 1418 has only 30 days, January 1 is the second day of 1419, and February has 30 days; so that March 25, the date of the downfall of the Barad-dûr, would correspond to our March 27, if our years began at the same seasonal point. The date was, however, March 25 in both Kings’ and Stewards’ Reckoning.
The New Reckoning was begun in the restored Kingdom in T.A. 3019. It represented a return to Kings’ Reckoning adapted to fit a spring-beginning as in the Eldarin loa. 1
In the New Reckoning the year began on March 25 old style, in commemoration of the fall of Sauron and the deeds of the Ring-bearers. The months retained their former names, beginning now with Víresse (April), but referred to periods beginning generally five days earlier than previously. All the months had 30 days. There were 3 Enderi or Middle-days (of which the second was called Loëndë), between Yavannië (September) and Narquelië (October), that corresponded with September 23, 24, 25 old style. But in honour of Frodo Yavannië 30, which corresponded with former September 22, his birthday, was made a festival, and the leap-year was provided for by doubling this feast, called Cormarë or Ringday.
The Fourth Age was held to have begun with the departure of Master Elrond, which took place in September 3021; but for purposes of record in the Kingdom Fourth Age 1 was the year that began according to the New Reckoning in March 25, 3021, old style.