Template talk:Table of dates of Easter

Astronomical?
The so-called "astronomical" dates were listed with no reference to the observing site. I would assume that Universal Time was simply used, but with the year range provided, the best that can be determined is "east of Greenland" (e. g. 2019's full moon is at 0143 UT).

The proposal for the Revised Julian Calendar included using astronomical observations from the site of the Church of the Holy Sepulchre in Jerusalem to reckon Easter, but this part of the proposal was not adopted. To my knowledge, no major Christian denomination currently uses a direct astronomical algorithm for reckoning Easter; even if an observing site was rigorously applied to the table, the information is only appropriate in the Easter controversy and/or Computus articles specifically (neither of which actually use this table) rather than in a generalized table of Easter dates. — Preceding unsigned comment added by 97.102.139.187 (talk • contribs) 29 March 2012‎


 * The source (World Council of Churches) indicates that the astronomical dates are referred to the meridian of Jerusalem. — Preceding unsigned comment added by Mockingbird0 (talk • contribs) 4 April 2012‎

Gregorian?!
Why is there a mention of "in Gregorian dates" as a subheading for the entire table, when there's at least a whole column that is specifically named as Julian?! -- Jokes Free4Me (talk) 21:28, 21 April 2013 (UTC)
 * The column labeled Julian is the Gregorian date of Easter as calculated using the Julian Calendar and the "Julian full moon". The calculation basic'ly says that Easter is the first Sunday after the first full moon after the 21st of March. So if you're using the Julian Calendar to decide when the 21st of March is (namely, on our April 3), then the first full moon after it may be some 29 days after the first full moon after the Gregorian March 21st. To get the Julian dates of those Easters, subtract 13 days. So when it says that in 2019 the Eastern Easter will be on April 28 (Gregorian), that's April 15th on the Julian Calendar. Maybe the title of the column should be changed to "Eastern Easter"! Eric Kvaalen (talk) 20:31, 2 February 2016 (UTC)

Beyond 2025
The cited 1997 WCC document only listed dates until 2025. We might want to extend the table, see e.g.. However, /row seems currently be limited to years between 2001 and 2025. — Christoph Päper 14:50, 28 January 2022 (UTC)


 * No. See the consensus at TfD. Even this still seems excessive. Gonnym (talk) 13:55, 4 February 2022 (UTC)
 * I'm pointing out that this table will become outdated in three years due to the source it is based upon. We'd need to find a reliable source for the Astronomical column if it was to be kept. (Since the table originates in the Aleppo reform proposal, the column was essential.)
 * Also, there was no real consensus in that TfD. — Christoph Päper 06:03, 7 February 2022 (UTC)


 * Wikidata has some of the required knowledge. See  for the Catholic/Gregorian definition, but there isn't data for the other systems yet. — Christoph Päper 17:36, 11 January 2023 (UTC)
 * Ideally, this template would output by default the dates of Easter Sunday for the current year, a couple of years in the past and a couple of years in the future. The exact value of "a couple" should be aligned with similar tables for other "lunar" holidays like Ramadan, Chanukkah or "Chinese" New Year.
 * The columns displayed by default should be the Western/Catholic/Gregorian date and the Eastern/Orthodox/Julian date, both shown as a day-month date in the civil/international/Gregorian calendar.
 * The values for the years should come from the central source Wikidata. They should not be maintained inside this English-only template.
 * For specialized articles and uses, it should be possible to supply parameters to the template to activate other columns (or deactivate the default ones) and set different start and end years for the range covered. The caption should adapt accordingly.
 * Neighboring cells within the same row that show the same date should still be merged by  automatically.
 * Do you agree, ?
 * PS: Note that there are (now?) articles like Jewish and Israeli holidays 2000–2050. — Christoph Päper 08:16, 24 January 2023 (UTC)
 * Ideally, this template would output by default the dates of Easter Sunday for the current year, a couple of years in the past and a couple of years in the future. - 21 years in the past and 22 years in the future is not a couple. Gonnym (talk) 09:12, 24 January 2023 (UTC)
 * Also, the article you linked to is horrible. It completely fails WP:NOTADIR. Gonnym (talk) 09:14, 24 January 2023 (UTC)
 * I wasn't saying that twentyish should be "a couple", was expecting some actual suggestion from you instead of another revert.
 * For the "Chinese" new year, 12 years in total make some sense, because that's the length of its calendar animal cycle.
 * Ramadan just includes a picture of an (erroneous) table from 1938 through 2038, but Ramadan (calendar month) has a table from two years ago to two years in the future.
 * Easter and Hanukkah have the last, the current and the next two year's dates in their infobox using which is based upon Module:Calendar date, while List of dates for Easter uses this template with default parameters. The module supports values EASTER and EASTER (EASTERN) by invoking Module:Easter.
 * In other words, this template could possibly be altered to use as well, when that has been extended to support all the values displayed in the table. — Christoph Päper 12:21, 25 January 2023 (UTC)
 * Alas, that template and module currently only support full-date output: 'dmy' = D MMMM CCYY, 'mdy' = MMMM D, CCYY, 'ymd' = CCYY MMMM D and 'iso' = CCYY-MM-DD. It also yields too much information for Jewish holidays because they start the evening before the civil calendar date.
 * Western/Gregorian Easter:
 * Eastern/Julian Easter:
 * Passover:
 * Passover:
 * Paschal Full Moon: cannot be determined by the module (yet)
 * Astronomical Easter: cannot be determined by the module (yet) — Christoph Päper 08:28, 26 January 2023 (UTC)


 * As for reliable sources, Calendrical Calculations by Edward M. Reingold and Nachum Dershowitz is widely regarded as the definite guide to calendar algorithms. Their LISP source code and sample data is provided at Cambridge Press in the Resources tab, e.g. this PDF. They include astronomical Easter dates up to the year 2100ish, but I have not verified yet whether these are 100% identical to the Aleppo definition. — Christoph Päper 18:04, 22 September 2023 (UTC)

Reingold and Dershowitz don’t give the date of the Paschal full moon directly. I’ve checked whether their Passover Eve (Classical) would be the same, but in the cells highlighted in yellow, they differ, usually by a single day.

I have now verified all the other dates, and they are indeed the same as in the data provided by the WCC (for 2011–2025) and recently added by. — Christoph Päper 17:28, 15 November 2023 (UTC)

Add dates for Jehovah's Witnesses' Memorial
Jehovah's Witnesses doesn't celebrate Easter anymore so they celebrate the Memorial instead. Therefore there shall be another column showing Memorial dates (the day before the full moon after spring equinox in Jerusalem). This year's memorial was on 4 April 2023. Baokhang48812002 (talk) 16:00, 4 April 2023 (UTC)
 * Acording to Memorial of Christ's death, Jehovah’s Witnesses celebrate that holiday on 14 Nisan in the ancient Hebrew calendar. — Christoph Päper 11:00, 5 April 2023 (UTC)
 * OK, you can check Jehovah's Witnesses' publications check the dates the Memorial fell on past years. Baokhang48812002 (talk) 12:34, 5 April 2023 (UTC)
 * But the Witnesses said the Nisan 14 is calculated not in modern Hebrew Calendar, but the biblical calendar. Therefore the Memorial may fall on 14, 15 or 16 Nisan or 14, 15 or 16 Adar on modern Hebrew Calendar. Baokhang48812002 (talk) 12:41, 5 April 2023 (UTC)
 * JW.ORG then announced that 2024 Memorial will be in 24 March (Purim 5783, 15 Adar II after sunset) — Preceding unsigned comment added by Baokhang48812002 (talk • contribs) 03:02, 7 April 2023 (UTC)
 * This is my proposal:
 * {| class="wikitable"

in Gregorian dates !Year ! !Astronomical Full Moon !Jewish Passover !Memorial (Jehovah's Witnesses) ! !Astronomical Easter !Gregorian Easter !Julian Easter
 * +Table of Easter dates (2001 - 2025)
 * - style="text-align:center"
 * 2001
 * colspan="3" |April 8
 * colspan="3" |April 15
 * - style="text-align:center"
 * 2002
 * colspan="3" |March 28
 * colspan="2" |March 31
 * May 5
 * - style="text-align:center"
 * 2003
 * April 16
 * April 17
 * April 16
 * colspan="2" |April 20
 * April 27
 * - style="text-align:center"
 * 2004
 * April 5
 * April 6
 * April 4
 * colspan="3" |April 11
 * - style="text-align:center"
 * 2005
 * March 25
 * April 24
 * March 24
 * colspan="2" |March 27
 * May 1
 * - style="text-align:center"
 * 2006
 * colspan="2" |April 13
 * April 12
 * colspan="2" |April 16
 * April 23
 * - style="text-align:center"
 * 2007
 * April 2
 * April 3
 * April 2
 * colspan="3" |April 8
 * - style="text-align:center"
 * 2008
 * March 21
 * April 20
 * March 22
 * colspan="2" |March 23
 * April 27
 * - style="text-align:center"
 * 2009
 * colspan="3" |April 9
 * colspan="2" |April 12
 * April 19
 * - style="text-align:center"
 * 2010
 * colspan="3" |March 30
 * colspan="3" |April 4
 * - style="text-align:center"
 * 2011
 * April 18
 * April 19
 * April 17
 * colspan="3" |April 24
 * - style="text-align:center"
 * 2012
 * April 6
 * April 7
 * April 5
 * colspan="2" |April 8
 * April 15
 * - style="text-align:center"
 * 2013
 * March 27
 * colspan="2" |March 26
 * colspan="2" |March 31
 * May 5
 * - style="text-align:center"
 * 2014
 * colspan="2" |April 15
 * April 14
 * colspan="3" |April 20
 * - style="text-align:center"
 * 2015
 * colspan="2" |April 4
 * April 3
 * colspan="2" |April 5
 * April 12
 * - style="text-align:center"
 * 2016
 * March 23
 * April 23
 * March 23
 * colspan="2" |March 27
 * May 1
 * - style="text-align:center"
 * 2017
 * colspan="3" |April 11
 * colspan="3" |April 16
 * - style="text-align:center"
 * 2018
 * colspan="3" |March 31
 * colspan="2" |April 1
 * April 8
 * - style="text-align:center"
 * 2019
 * March 21
 * April 20
 * April 19
 * March 24
 * April 21
 * April 28
 * - style="text-align:center"
 * 2020
 * April 8
 * April 9
 * April 7
 * colspan="2" |April 12
 * April 19
 * - style="text-align:center"
 * 2021
 * colspan="2" |March 28
 * March 27
 * colspan="2" |April 4
 * May 2
 * - style="text-align:center"
 * 2022
 * colspan="2" |April 16
 * April 15
 * colspan="2" |April 17
 * April 24
 * - style="text-align:center"
 * 2023
 * colspan="2" |April 6
 * April 4
 * colspan="2" |April 9
 * April 16
 * - style="text-align:center"
 * 2024
 * March 25
 * April 23
 * March 24
 * colspan="2" |March 31
 * May 5
 * - style="text-align:center"
 * 2025
 * colspan="2" |April 13
 * April 12
 * colspan="3" |April 20
 * }
 * Baokhang48812002 (talk) 06:31, 17 April 2023 (UTC)
 * 2026-2030 Memorials:
 * 2026: 02 April 2026
 * 2027: 22 March 2027
 * 2028: 09 April 2028
 * 2029: 29 March 2029
 * 2030: 16 March 2030 Baokhang48812002 (talk) 14:11, 29 January 2024 (UTC)
 * colspan="2" |April 12
 * April 19
 * - style="text-align:center"
 * 2021
 * colspan="2" |March 28
 * March 27
 * colspan="2" |April 4
 * May 2
 * - style="text-align:center"
 * 2022
 * colspan="2" |April 16
 * April 15
 * colspan="2" |April 17
 * April 24
 * - style="text-align:center"
 * 2023
 * colspan="2" |April 6
 * April 4
 * colspan="2" |April 9
 * April 16
 * - style="text-align:center"
 * 2024
 * March 25
 * April 23
 * March 24
 * colspan="2" |March 31
 * May 5
 * - style="text-align:center"
 * 2025
 * colspan="2" |April 13
 * April 12
 * colspan="3" |April 20
 * }
 * Baokhang48812002 (talk) 06:31, 17 April 2023 (UTC)
 * 2026-2030 Memorials:
 * 2026: 02 April 2026
 * 2027: 22 March 2027
 * 2028: 09 April 2028
 * 2029: 29 March 2029
 * 2030: 16 March 2030 Baokhang48812002 (talk) 14:11, 29 January 2024 (UTC)
 * colspan="3" |April 20
 * }
 * Baokhang48812002 (talk) 06:31, 17 April 2023 (UTC)
 * 2026-2030 Memorials:
 * 2026: 02 April 2026
 * 2027: 22 March 2027
 * 2028: 09 April 2028
 * 2029: 29 March 2029
 * 2030: 16 March 2030 Baokhang48812002 (talk) 14:11, 29 January 2024 (UTC)
 * 2030: 16 March 2030 Baokhang48812002 (talk) 14:11, 29 January 2024 (UTC)

Add dates for Metonic/Julian Full Moon
Hi. I think that the table is deficient, since there is not a Full Moon column, concerning the Orthodox/Julian Easter.

It is not unknown that the Orthodox Easter is celebrated after the first Full Moon of Spring, as computed by the 19-year cycle of Meton, according to the Julian calendar. This date, which is lagging the astronomical full moon at least 3 or 4 days and up to 32 or 33 days, is also called "Nomikon Faska" (Νομικόν Φάσκα) in Greek, meaning the ancient, Jewish Passover according to the Law of Moses, the computation of which was abandoned the last centuries, after Jews recognized the cummulative error of the Metonic cycle over the previous years, introducing the more useful Hebrew calendar.

So, I propose the insertion of another column between the "Jewish Passover" and the "Astronomical Easter", tagged as "Metonic/Julian Full Moon", with the first column head to be renamed as "Astronomical Full Moon" for confusion avoidance. The accurate dates of "Nomikon Faska" are listed below in Gregorian dates. The data are verifiable, searching at Orthodox chuch books or prayer books, as I do with the Greek holy prayer's book: Θείον Προσευχητάριον, εκδ. Ματθαίου Λαγγή Επισκόπου Οινόης (published by Mathew Laggis, Bishop of Oenoi), p.p. 243-249.

I hope my proposal will be heard, soon.

Thank you in advance! ~ 244wiki (talk) 20:23, 8 April 2023 (UTC)