'The use of the Kalendar for finding the Lords day & the Moveable Feasts'

Author: Isaac Newton

Source: Yahuda Ms. 24b, National Library of Israel, Jerusalem, Israel

Published online: October 2009

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- Revision History
  - 1 January 2001
    - Catalogue information compiled by Rob Iliffe, Peter Spargo & John Young
  - 19 October 2009
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  - 4 November 2009
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  - 29 September 2011
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Related Texts
- This document is part of Yahuda Ms. 24
  The previous part of this document is Three drafts of 'Considerations about rectifying the Iulian Kalendar' and an unrelated alchemical recipe [Yahuda Ms. 24a]
  The next part of this document is Draft proposals for rectifying the Julian calendar [Yahuda Ms. 24c]

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The use of the Kalendar for finding the Lords day & the Moveable Feasts.

Divide the year of our Lord by 28. Seek the remainder in the following Table & you will find under it the Sunday Letter or Letters for that year. And in the third column of the Kalendar where you see the Sunday Letter the days are Sundays. In {a} Leap year there are two Sunday letters; the one obteins til Feb. 24 & the other for the rest of the year.

0.	1.	2.	3.	4.	5.	6.	7.	8.	9.	10.	11.	12.	13.	14.	15.	16.	17.	18.	19.	20.	21.	22.	23.	24.	25.	26.	27
D.	B.	A.	G.	F.	D.	C.	B.	A.	F.	E.	D.	C.	A.	G.	F.	E.	C.	B.	A.	G.	E.	D.	C.	B.	G.	F.	E.
C.				E.				G.				B.				D.				F.				A.

Divide the year of our Lord by 19 & the remainder increased by an unit shall be the Golden Number or Prime for that year. And in the first column of the Kalendar where you find that number the days are new-Moons according to the Kalendar , & the 14^th day of the Moon is the Full Moon & Easter day is always the first Lords day after the full Moon which happens upon or next after the one & twentieth day of March

Septuagesima		nine
Sexagesima	Sunday	eight	weeks before
Quinquagesima	is	seven	Easter.
Quadragesima		six

Rogation Sunday		5 weeks
Ascention day	is	40 days	after
Whitsunday		7 weeks	Easter.
Trinity Sunday		8 weeks

Advent Sunday is always the nearest Sunday to the Feast of S^t Andrew whether before or after.

Those full Moons may be readily found by the ens

0.	1.	2.	3.	4.	5.	6.	7.	8.	9.	10.	11.	12.	13.	14.	15.	16.	17.	18.	19.	20.	21.	22.	23.	24.	25.	26.	27
D.	B.	A.	G.	F.	D.	C.	B.	A.	F.	E.	D.	C.	A.	G.	F.	E.	C.	B.	A.	G.	E.	D.	C.	B.	G.	F.	E.
C.				E.				G.				B.				D.				F.				A.

0.	1.	2.	3.	4.	5.	6.	7.	8.	9.	10.	11.	12.	13.	14.	15.	16.	17.	18.	19.	20.	21.	22.	23.	24.	25.	26.	27
D.	B.	A.	G.	F.	D.	C.	B.	A.	F.	E.	D.	C.	A.	G.	F.	E.	C.	B.	A.	G.	E.	D.	C.	B.	G.	F.	E.
C.				E.				G.				B.				D.				F.				A.

0.	1.	2.	3.	4.	5.	6.	7.	8.	9.	10.	11.	12.	13.	14.	15.	16.	17.	18.	19.	20.	21.	22.	23.	24.	25.	26.	27
D.	B.	A.	G.	F.	D.	C.	B.	A.	F.	E.	D.	C.	A.	G.	F.	E.	C.	B.	A.	G.	E.	D.	C.	B.	G.	F.	E.
C.				E.				G.				B.				D.				F.				A.