Holidays related to Easter: Difference between revisions
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2020 Easter: Sun 12 Apr, Ascension: Thu 21 May, Pentecost: Sun 31 May, Trinity: Sun 7 Jun, Corpus: Thu 11 Jun |
2020 Easter: Sun 12 Apr, Ascension: Thu 21 May, Pentecost: Sun 31 May, Trinity: Sun 7 Jun, Corpus: Thu 11 Jun |
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</pre> |
</pre> |
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=={{header|BASH}}== |
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<lang bash> |
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#! /bin/bash |
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# vim: ts=4 : |
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# Calendar algorithm source: https://www.rmg.co.uk/stories/topics/when-easter |
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easter() { |
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y=$1 |
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if [[ $year -gt 2099 ]] |
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then |
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echo Error: This algorithm does not work after 2099. |
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exit |
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fi |
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(( day = 225 - 11 * (year % 19) )) |
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while [[ $day -gt 50 ]] |
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do |
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(( day -= 30 )) |
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done |
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if [ $day -gt 48 ] |
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then |
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(( --day )) |
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fi |
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(( day = day + 7 - (year + year/4 + day + 1) % 7 )) |
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echo $day |
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} |
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for year in {1998..2099} |
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do |
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day=$( easter $year ) |
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if [ $day -gt 31 ] |
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then |
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(( day -= 31 )) |
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printf "%d-%02d-%02d\n" $year 4 $day |
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else |
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printf "%d-%02d-%02d\n" $year 3 $day |
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fi |
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done |
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</lang> |
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=={{header|BBC BASIC}}== |
=={{header|BBC BASIC}}== |
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