Frequency Of Occurrences Of The Date Of Easter Over One Complete ...

Christian Feast Days Dependent on Easter Sunday

The date of Easter Sunday is crucial for the sequence of the Christian liturgical year as many Christian feast days are celebrated at a fixed interval of days (or weeks) before or after Easter Sunday.

The following table lists the most important days in the Christian liturgical year and their relation with the date of Easter Sunday. Nominally, the dates are given for the current (Gregorian) calendar year, but the dates can be adjusted for any other year in the Gregorian calendar.

Year Golden Number Epact Year type Dominical Letter Easter Full Moon (luna XIV) Easter Sunday Lunar age on Easter Sunday days

Movable Christian feast days during the Epiphany Season

Feast day	Antiphona ad Introitum [Vulgate numbering]	Offset from Easter Sunday	Date
Feast of the Holy Name of Jesus (Sunday after/on 1 January)	In nomine Jesu (Philippians 2:10)	weeks
Feast of the Holy Family (1st Sunday after Epiphany)	Exsultat gaudio (Proverbs 23:24-25)	weeks
2nd Sunday after Epiphany	Omnis terra (Psalms 65:4)	weeks
3rd Sunday after Epiphany	Adorate Deum (Psalms 96:7-8)	weeks
4th Sunday after Epiphany	Adorate Deum (Psalms 96:7-8)	weeks
5th Sunday after Epiphany	Adorate Deum (Psalms 96:7-8)	weeks
6th Sunday after Epiphany	Adorate Deum (Psalms 96:7-8)	weeks

Movable Christian feast days depending on the date of Easter Sunday

Feast day	Antiphona ad Introitum [Vulgate numbering]	Offset from Easter Sunday	Date
Septuagesima Sunday	Circumdederunt me (Psalms 17:5-7)	–9 weeks
Sexagesima Sunday	Exsurge (Psalms 43:23-26)	–8 weeks
Quinquagesima Sunday (Shrove Sunday)	Esto mihi in Deum (Psalms 30:3-4)	–7 weeks
Ash Wednesday (1st day in Lent)	Misereris omnium (Wisdom 11:24-25 & 27)	–46 days
Quadragesima Sunday (1st Sunday in Lent)	Invocavit me (Psalms 90:15-16)	–6 weeks
2nd Sunday in Lent	Reminiscere miserationum (Psalms 24:6, 3 & 22)	–5 weeks
Oculi Sunday (3rd Sunday in Lent)	Oculi mei (Psalms 24:15-16)	–4 weeks
Mid-Lent Sunday (4th Sunday in Lent)	Laetamini (Isaiah 66:10-11)	–3 weeks
Passion Sunday (1st Sunday in Passiontide)	Iudica me Deus (Psalms 42:1-2)	–2 weeks
Palm Sunday/Passion Sunday [RC] (2nd Sunday in Passiontide)	Domine ne longe (Psalms 21:20 & 22)	–1 week
Holy Thursday (Maundy Thursday)	Nos autem gloriari (Galatians 6:14)	–3 days
Good Friday	–2 days
Holy Saturday	–1 day
Easter Sunday	Resurrexi (Psalms 138:18, 5 & 6)	0
Low Sunday (Octave Sunday of Easter)	Quasi modo geniti infantes (I Peter 2:2)	+1 week
2nd Sunday after Easter	Misericordia Domini (Psalms 32:5-6)	+2 weeks
3rd Sunday after Easter	Jubilate Deo (Psalms 65:1-2)	+3 weeks
4th Sunday after Easter	Cantate Domino (Psalms 97:1-2)	+4 weeks
Rogation Sunday	Vocem jucunditatis (Isaiah 48:20)	+5 weeks
Ascension Day (Thursday)	Viri Galilaei (Psalms 138:18 & 5-6)	+39 days
Octave Sunday of Ascension	Exaudi Domine (Psalms 26:7-9)	+6 weeks
Pentecost (Whitsunday)	Spiritus Domini (Wisdom 1:7)	+7 weeks
Trinity Sunday (1st Sunday after Pentecost)	Benedicta sit (Tobit 12:6)	+8 weeks
Corpus Christi (Thursday after Trinity Sunday)	Cibavit eos (Psalms 80:17)	+60 days
2nd Sunday after Pentecost (Corpus Christi [USA])	Factus est Dominus (Psalms 17:19-20)	+9 weeks
3rd Sunday after Pentecost	Respice in me (Psalms 24:16 & 18)	+10 weeks
4th Sunday after Pentecost	Dominus illuminatio mea (Psalms 26:1-2)	+11 weeks
5th Sunday after Pentecost	Exaudi Domine (Psalms 26:7 & 9)	+12 weeks
6th Sunday after Pentecost	Dominus fortitudo (Psalms 27:8-9)	+13 weeks
7th Sunday after Pentecost	Omnes gentes (Psalms 46:2)	+14 weeks
8th Sunday after Pentecost	Suscepimus Deus (Psalms 47:10-11)	+15 weeks
9th Sunday after Pentecost	Ecce Deus adjuvat (Psalms 53:6-7)	+16 weeks
10th Sunday after Pentecost	Cum clamarem (Psalms 54:17-18, 20 & 23)	+17 weeks
11th Sunday after Pentecost	Deus in loco sancto (Psalms 67:6-7 & 36)	+18 weeks
12th Sunday after Pentecost	Deus in adjutorium (Psalms 69:2-3)	+19 weeks
13th Sunday after Pentecost	Respice Domine (Psalms 73:20, 19 & 23)	+20 weeks
14th Sunday after Pentecost	Protector noster (Psalms 83:10-11)	+21 weeks
15th Sunday after Pentecost	Inclina Domine (Psalms 85:1-3)	+22 weeks
16th Sunday after Pentecost	Miserere mihi Domine (Psalms 85:3 & 5)	+23 weeks
17th Sunday after Pentecost	Justus es Domine (Psalms 118:137 & 124)	+24 weeks
18th Sunday after Pentecost	Da pacem Domine (Ecclesiastes 36:18)	+25 weeks
19th Sunday after Pentecost	Salus populi (non-scriptural + Psalms 77:1)	+26 weeks
20th Sunday after Pentecost	Omnia quae fecisti (Daniel 3:31, 29 & 35)	+27 weeks
21st Sunday after Pentecost	In voluntate tua (Esther 13:9-11)	+28 weeks
22nd Sunday after Pentecost	Si iniquitates observaveris (Psalms 129:3-4)	+29 weeks
23rd Sunday after Pentecost	Dicit Dominus (Jeremiah 29:11-12 & 14)	+30 weeks
24th Sunday after Pentecost	Dicit Dominus (Jeremiah 29:11-12 & 14)	+31 weeks
25th Sunday after Pentecost	Dicit Dominus (Jeremiah 29:11-12 & 14)	+32 weeks
26th Sunday after Pentecost	Dicit Dominus (Jeremiah 29:11-12 & 14)	+33 weeks
27th Sunday after Pentecost	Dicit Dominus (Jeremiah 29:11-12 & 14)	+34 weeks
28th Sunday after Pentecost	Dicit Dominus (Jeremiah 29:11-12 & 14)	+35 weeks

Movable Christian feast days in the Advent Season

Feast day	Antiphona ad Introitum [Vulgate numbering]	Defined as	Sundays after Easter	Date
1st Sunday of Advent	Ad te levavi (Psalms 24:1-3)	Nearest Sunday to 30 November
2nd Sunday of Advent	Populus Sion (Isaiah 30:30)	Sunday after 1st Sunday of Advent
3rd Sunday of Advent	Gaudete (Philippians 4:4-6)	2nd Sunday after 1st Sunday of Advent
Ember Wednesday in Advent	Rorate coeli (Isaiah 45:8)	Wednesday before last Sunday of Advent	–
Ember Friday in Advent	Prope esto (Psalms 118:151-152)	Friday before last Sunday of Advent	–
Ember Saturday in Advent	Veni et ostende (Psalms 79:4 & 2)	Saturday before last Sunday of Advent	–
4th Sunday of Advent	Memento nostri (Psalms 105:4)	Last Sunday of Advent
Sunday in Christmas Octave	Dum medium silentium (Wisdom 18:14-15)	First Sunday after Advent

Easter – First Advent Sunday Intervals

First Advent Sunday is defined as the fourth Sunday before Christmas and formally starts the annual cycle of Christian feast days celebrating the birth and passion of Jesus Christ. During a complete 5 700 000-year Gregorian Easter Cycle the number of weeks between Easter Sunday and First Advent Sunday are distributed as follows:

Weeks	Frequency	%	Easter Sunday
31	124650	2.187	24 – 25 April
32	1206775	21.171	17 – 23 April
33	1330000	23.333	10 – 16 April
34	1330000	23.333	3 – 9 April
35	1302450	22.850	27 March – 2 April
36	406125	7.125	22 – 26 March

The shortest interval of 31 weeks only occurs when Easter Sunday falls on 24 or 25 April. Since the introduction of the Gregorian calendar this has occurred in 1639, 1666, 1707, 1734, 1791, 1859, 1886, 1943 and 2011. The next occurrences (up to 2500) will be in 2038, 2095, 2163, 2190, 2231, 2258, 2326, 2383, 2410, 2467 and 2478.

The longest interval of 36 weeks occurs when Easter Sunday falls on 22, 23, 24, 25 or 26 March. During the past two centuries this has occurred in 1815, 1818, 1826, 1837, 1845, 1856, 1883, 1894, 1913, 1940, 1951, 1967, 1978, 1989 and 2008. The next occurrences (up to 2100) will be in 2035, 2046, 2062, 2073 and 2084.

Leap Day Coincidences

Occasionally, one of the Christian feast days in or just before the Lenten season can fall on the leap day in February. From a liturgical point of view, this does not heighten or modify the character of the event but from a calendrical point of view it may be useful to single these out.

The following table lists these coincidences in the Dionysian/Julian reckoning (years from 532 to 1582) and in the Gregorian reckoning (years from 1583 to 5000) assuming that the leap day is reckoned as the last day in February (29 February).

Coincidences with 29 February (a.d. pridie kal. Martias)
Feast Day	Dionysian	Gregorian	DominicalLetter	EasterSunday
Sexagesima Sunday	672, 1204	3784, 4088, 4156, 4224, 4376, 4528, 4680, 4748	DC	25 April
Shrove Sunday	588, 868, 952, 1036, 1120, 1400, 1484, 1568	1604, 1688, 1756, 1824, 1976, 2060, 2128, 2280, 2348, 2432, 2584, 2652, 2720, 2804, 2888, 2956, 3024, 3176, 3260, 3328, 3480, 3548, 3632, 3852, 3920, 4004, 4860	DC	18 April
Ash Wednesday	624, 708, 792, 876, 1156, 1240, 1324, 1408	2096, 2468, 2688, 2840, 2992, 3212, 3296, 3364, 3432, 3584, 3668, 3736, 3804, 3888, 3956, 4040, 4108, 4192, 4260, 4328, 4412, 4496, 4564, 4632, 4784, 4868, 4936	AG	15 April
Quadragesima Sunday	532, 616, 700, 784, 980, 1064, 1148, 1232, 1316, 1512	1632, 1784, 1852, 2004, 2088, 2156, 2224, 2376, 2460, 2528, 2680, 2748, 2832, 2984, 3052, 3120, 3204, 3288, 3356, 3424, 3576, 3660, 3728, 3880, 3948, 4032, 4184, 4252, 4320, 4404, 4488, 4556, 4624, 4776, 4928	DC	11 April
2nd Sunday in Lent	644, 728, 812, 896, 1176, 1260, 1344, 1428	1920, 2488, 2860, 3232, 3384, 3452, 3604, 3688, 3756, 3824, 3976, 4060, 4128, 4280, 4348, 4432, 4584, 4652, 4720, 4804, 4888, 4956	DC	4 April
Oculi Sunday	560, 756, 840, 924, 1008, 1092, 1288, 1372, 1456, 1540	1660, 1728, 1880, 1948, 2032, 2184, 2252, 2320, 2404, 2556, 2624, 2776, 2928, 3080, 3148, 3520, 4460, 4832, 4984	DC	28 March

The following table lists these coincidences in the Dionysian/Julian reckoning (years from 532 to 1582) and in the Gregorian reckoning (years from 1583 to 5000) assuming that the leap day is reckoned as in the traditional Roman calendar (24 February).

Coincidences with 24 February (a.d. bis VI kal. Martias)
Feast Day	Dionysian	Gregorian	DominicalLetter	EasterSunday
Sexagesima Sunday	648, 732, 816, 900, 1180, 1264, 1348, 1432	1924, 2864, 3236, 3388, 3456, 3608, 3692, 3760, 3828, 3980, 4064, 4132, 4284, 4352, 4436, 4504, 4588, 4656, 4724, 4808, 4892, 4960	FE	20 April
Shrove Sunday	564, 844, 928, 1012, 1096, 1376, 1460, 1544	1664, 1732, 1884, 1952, 2036, 2104, 2188, 2256, 2324, 2408, 2492, 2560, 2628, 2780, 2932, 3084, 3152, 3304, 3524, 4464, 4836, 4988	FE	13 April
Ash Wednesday	600, 684, 768, 852, 1132, 1216, 1300, 1384	2072, 2292, 2444, 2596, 2664, 2816, 2968, 3036, 3188, 3272, 3340, 3408, 3492, 3560, 3644, 3712, 3796, 3864, 3932, 4016, 4168, 4236, 4304, 4388, 4472, 4540, 4608, 4692, 4760, 4844, 4912, 4996	CB	10 April
Quadragesima Sunday	592, 676, 760, 956, 1040, 1124, 1208, 1292, 1488, 1572	1608, 1692, 1760, 1828, 1980, 2064, 2132, 2284, 2352, 2436, 2504, 2588, 2656, 2724, 2808, 2892, 2960, 3028, 3180, 3264, 3332, 3484, 3552, 3636, 3704, 3788, 3856, 3924, 4008, 4092, 4160, 4228, 4380, 4532, 4684, 4752, 4904	FE	6 April
2nd Sunday in Lent	620, 704, 788, 872, 1152, 1236, 1320, 1404	2092, 2464, 2684, 2836, 2904, 2988, 3056, 3208, 3292, 3360, 3428, 3580, 3664, 3732, 3884, 3952, 4036, 4104, 4188, 4256, 4324, 4408, 4492, 4560, 4628, 4780, 4864, 4932	FE	30 March
Oculi Sunday	536, 984, 1068, 1516	1636, 1704, 1788, 1856, 2008, 2160, 2228, 2380, 2532, 2752, 3124	FE	23 March