ICCEC Calendar Calculator

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Your Year is: 2018

ICCEC Test Calendar Calculator Sunday Lectionary is Year: B  Daily Lectionary is Year:  One
Events Date
Advent 1 Sun-03-Dec-2017
Advent 2 Sun-10-Dec-2017
Advent 3 Sun-17-Dec-2017
Advent 4 Sun-24-Dec-2017
The Nativity of the Lord (Christmas) Mon-25-Dec-2017
First Sunday after Christmas Sun-31-Dec-2017
Second Sunday After Christmas Sun-07-Jan-2018 Not Used this year
Epiphany Sat-06-Jan-2018
Epiphany Sunday Sun-07-Jan-2018
First Sunday after Epiphany (or Baptism of The Lord) Sun-07-Jan-2018
Second Sunday after Epiphany Sun-14-Jan-2018
Third Sunday after Epiphany Sun-21-Jan-2018
Feast of the Lord and Giver of Life Sun-21-Jan-2018
Fourth Sunday after Epiphany Sun-28-Jan-2018
Fifth Sunday after Epiphany Sun-04-Feb-2018
Sixth Sunday after Epiphany Sun-11-Feb-2018 Not Used this year
Seventh Sunday after Epiphany Sun-18-Feb-2018 Not Used this year
Eighth Sunday after Epiphany Sun-25-Feb-2018 Not Used this year
Last Sunday after Epiphany Sun-11-Feb-2018
Ash Wednesday Wed-14-Feb-2018
Lent 1 Sun-18-Feb-2018
Lent 2 Sun-25-Feb-2018
Lent 3 Sun-04-Mar-2018
Lent 4 Sun-11-Mar-2018
Lent 5 Sun-18-Mar-2018
Palm Sunday Sun-25-Mar-2018
Monday in Holy Week Mon-26-Mar-2018
Tuesday in Holy Week Tue-27-Mar-2018
Wednesday in Holy Week Wed-28-Mar-2018
Thursday in Holy Week Thu-29-Mar-2018
Friday in Holy Week Fri-30-Mar-2018
Saturday in Holy Week Sat-31-Mar-2018
Easter Sun-01-Apr-2018
Second Sunday in Easter Sun-08-Apr-2018
Third Sunday in Easter Sun-15-Apr-2018
Fourth Sunday in Easter Sun-22-Apr-2018
Fifth Sunday in Easter Sun-29-Apr-2018
Sixth Sunday in Easter Sun-06-May-2018
Seventh Sunday in Easter (or Ascension Sunday) Sun-13-May-2018
Pentecost Sun-20-May-2018
Trinity Sunday Sun-27-May-2018
This Ordinary Season Start with Proper 4: 03-Jun-2018
Proper 1 Sun-13-May-2018  Not used this year
Proper 2 Sun-20-May-2018  Not used this year
Proper 3 Sun-27-May-2018  Not used this year
Proper 4 Sun-03-Jun-2018
Proper 5 Sun-10-Jun-2018
Proper 6 Sun-17-Jun-2018
Proper 7 Sun-24-Jun-2018
Proper 8 Sun-01-Jul-2018
Proper 9 Sun-08-Jul-2018
Proper 10 Sun-15-Jul-2018
Proper 11 Sun-22-Jul-2018
Proper 12 Sun-29-Jul-2018
Proper 13 Sun-05-Aug-2018
Proper 14 Sun-12-Aug-2018
Proper 15 Sun-19-Aug-2018
Proper 16 Sun-26-Aug-2018
Proper 17 Sun-02-Sep-2018
Proper 18 Sun-09-Sep-2018
Proper 19 Sun-16-Sep-2018
Proper 20 Sun-23-Sep-2018
Proper 21 Sun-30-Sep-2018
Proper 22 Sun-07-Oct-2018
Proper 23 Sun-14-Oct-2018
Proper 24 Sun-21-Oct-2018
Proper 25 Sun-28-Oct-2018
Proper 26 Sun-04-Nov-2018
Proper 27 Sun-11-Nov-2018
Proper 28 Sun-18-Nov-2018
Proper 29 (or Christ the King) Sun-25-Nov-2018
Advent 1 (Start of Next Years Church Calendar) Sun-02-Dec-2018
Other Days
Ascension Thu-10-May-2018
Corpus Christi Thu-31-May-2018
Missions Offering(All Saints Sunday) Sun-04-Nov-2018
Foundation Day Sun-24-Jun-2018

The Rules Behind the Calculation

Basic Rules: The Church Calendar has 2 fix points, Nativity of the Lord(Christmas) always on 25 Dec and Easter the first Sunday after the first full moon occurring on or after the spring equinox. Modern programming languages now a function call easter(). It will find the date of Easter in any year in the parentheses. This program uses these two dates to determine everything else.

Advent: Advent always has 4 Sundays, but it can be either 3 or 4 weeks. When Advent 4 is on Dec 24th, the morning is Advent 4 and then the afternoon is Christmas Eve. The Advent Sundays are calculated finding the 4 Sundays before Dec 25th, even if one of those Sundays in Christmas Eve. There can be up to 2 Sundays after Christmas, but most years there is only one.

Epiphany: This is the twelve days of Christmas. Twelve days after Christmas (25 Dec) is Epiphany (6 Jan). The Sunday nearest to 6 Jan can be celebrated as Epiphany Sunday, or the fist Sunday after Epiphany (The Baptism of the Lord). Epiphany Sundays are then counted until the Sunday before Ash Wednesday. The reading labeled the Last week of Epiphany, is always last. So, if you have 5 weeks of Epiphany, instead of celebrating the fifth week, you celibrate the Last Sunday. A good way to remember is that the Last Sunday of Epiphany has the Ash Wednesday readings.

Lent: Lent always has 46 days, 40 not counting the Sundays (which are a Feast day in Lent). It is always calculated back from Easter. Lent, like Advent and the Easter Season, have fixed number of Sundays, and other seasons expand and contract to fit them.

Easter: In 325CE the Council of Nicaea established that Easter would be held on the first Sunday after the first full moon occurring on or after the spring equinox. From that point forward, the Easter date depended on the ecclesiastical approximation of March 21 for the equinox. Easter is delayed by 1 week if the full moon is on Sunday. Easter can be as early March 21st as in the year 1818 as or late as 10 May in the year 2268.

Easter Determines these dates
Ash Wednesday (47 days before Easter)
Ascension Day (10 days before Whit Sunday)
Palm Sunday (1 week before Easter Sunday)
Pentecost (Whit Sunday) (7 weeks after Easter Sunday)
The Easter Season always has seven Sundays, plus Pentecost.

Day of Pentecost: ends the fifty-day season of Easter (that’s what the Greek word “Pentecost” means!) It does not begin a “Pentecost Season”.

Trinity Sunday: Is the first Sunday after Pentecost.

Ordinary Time: (AKA Kingdomtide) Ordinary time, does not mean common. It refers to Ordinal time, or Ordinal numbers, which means First, Second, third etc, which are ranks, versus Cardinal numbers which are 1,2,3,.. which mean how many. Ordinary weeks are set backward from the last week of the Church Year, which is always Proper 29. When do the Proper’s start? It has been determined that earliest possible Day of Pentecost May 10, hence Proper 1 is“closest to May 11”. The propers are planned backwards. The Sunday before Advent 1 (of the next year) is Proper 29, then the propers fill in before that until they hit Penecost and the proper closet to that Sunday after Pentecost is used. The early propers are rarely used, but those reading still find their way in the lectioanary, because they are repeats of last weeks of Epiphany. You may notice the readings for Proper 1 are just the same as the readings for the 6th Sunday after Epiphany; Proper 2 is the same as seventh Sunday after Epiphany. This continues to the 8th Sunday after Epiphany, the greatest number of Sundays possible after Epiphany.

Sixth Sunday After Epiphany = Proper 1
Seventh Sunday After Epiphany = Proper 2
Eighth Sunday After Epiphany = Proper 3

Closest To: Any Sundays closest to a date are calculated like this
Sunday < Monday <Tuesday <Wednesday
Thursday> Friday> Saturday > Sunday

Why only can we only calcualte date between 1970-2037? This is the Y2K problem of servers. These servers count dates by seconds from about Dec 1969. Those seconds will fill a 32-bit integer (the size of integers computer use to talk) in 2037. The issue is well known and several fixes are in the pipeline. Until then, the answer to easter(2038) is a surprise, just kidding, BCP has it calculated until 2089.

Lectonary Cycles Calculation
The Sunday Lectionary Cycle(Year A, B or C) and Daily Office Cycle(One or Two) is simple. Daily Office One years starts in even years (Advent 1 Sunday) and Daily Office Years start in odd years.
The Sunday Lectionary Cycle starts incrementing 1968 by three years, and any Advent Sunday 1 that matches one of those years is Year A, same for Year B(1969) and Year C(1970).