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Get-FrenchRepublicanDate.ps1
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Get-FrenchRepublicanDate.ps1
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<#
.SYNOPSIS
Returns a date and time converted to the French Republican Calendar.
.INPUTS
System.DateTime containing the Gregorian date and time to convert.
.OUTPUTS
System.Management.Automation.PSCustomObject containing a French Republican Calendar
date and time in these properties:
* Year: the numeric year
* Année: the Roman numeral year
* AnnéeUnicode: the Unicode Roman numeral year
* Month: the numeric month
* MonthName: the English month name
* Mois: the French month name
* Day: the numeric day of the month
* DayOfYear: the numeric day of the year
* Jour: the French name of the day of the year
* DayName: the English name of the day of the year
* Decade: the number of the 10-day "week" of the year
* DayOfDecade: the numeric day of the 10-day "week"
* DecadeOrdinal: the name of the day of the 10-day "week"
* DecimalTime: the decimal time (10 hours/day, 100 minutes/hour, 100 seconds/minute)
* GregorianDate: the original Gregorian date, as provided
.FUNCTIONALITY
Date and time
.LINK
https://wikipedia.org/wiki/French_Republican_calendar
.LINK
https://wikipedia.org/wiki/Equinox
.LINK
https://www.timeanddate.com/calendar/seasons.html
.LINK
https://www.projectpluto.com/calendar.htm
.LINK
https://github.com/Bill-Gray/lunar/blob/master/date.cpp#L340
.LINK
http://rosettacode.org/wiki/French_Republican_calendar
.LINK
http://www.windhorst.org/calendar/
.LINK
Stop-ThrowError.ps1
.EXAMPLE
Get-FrenchRepublicanDate.ps1 2020-07-08
Year : 228
Année : CCXXVIII
AnnéeUnicode : ⅭⅭⅩⅩⅧ
Month : 10
MonthName : Harvest
Mois : Messidor
Day : 21
DayOfYear : 291
Jour : Menthe
DayName : Mint
Decade : 30
DayOfDecade : 1
DecadeOrdinal : Primidi
DecimalTime : 0:00:00
GregorianDate : 2020-07-08 00:00:00
#>
#Requires -Version 3
[CmdletBinding()] Param(
# The Gregorian calendar date and time to convert.
[Parameter(Position=0,ValueFromPipeline=$true)][datetime] $Date = (Get-Date),
# Which method to use to calculate leap years, of the competing choices.
[ValidateSet('Equinox','Romme','Continuous','128Year')][string] $Method = 'Romme'
)
Begin
{
function Get-128YearLeapDay([int]$year)
{
[int] $remainder = 0
[int] $pastdays = 31 * [math]::DivRem($year,128,[ref]$remainder) +
[math]::Floor($remainder/4)
[int] $yearlength = 365+[int](!($year % 4) -and ($year % 128))
return $pastdays,$yearlength
}
function Get-ContinuousLeapDay([int]$year)
{
[int] $remainder = 0
[int] $pastdays = (97 * [math]::DivRem($year+1,400,[ref]$remainder)) +
(24 * [math]::DivRem($remainder,100,[ref]$remainder)) +
[math]::Floor($remainder/4)
[int] $yearlength = 365+[int]([datetime]::IsLeapYear($year+1))
return $pastdays,$yearlength
}
function Get-RommeLeapDay([int]$year)
{
[int] $remainder = 0
[int] $pastdays = (97 * [math]::DivRem($year,400,[ref]$remainder)) +
(24 * [math]::DivRem($remainder,100,[ref]$remainder)) +
[math]::Floor($remainder/4)
[int] $yearlength = 365+[int]([datetime]::IsLeapYear($year))
return $pastdays,$yearlength
}
$origin = [datetime]'1792-09-22'
${les mois} = 'Vendémiaire','Brumaire','Frimaire','Nivôse','Pluviôse','Ventôse',
'Germinal','Floréal','Prairial','Messidor','Thermidor','Fructidor','Sansculottides'
$months = 'Grape Harvest','Fog','Frost','Snowy','Rainy','Windy',
'Germination','Flowering','Meadow','Harvest','Heat','Fruit','Complementary Days'
${les jours du decade} = 'Primidi','Duodi','Tridi','Quartidi','Quintidi','Sextidi','Septidi','Octidi','Nonidi','Décadi'
${les jours} =
'Raisin','Safran','Châtaigne','Colchique','Cheval','Balsamine','Carotte','Amaranthe','Panais','Cuve',
'Pomme de terre','Immortelle','Potiron','Réséda','Âne','Belle de nuit','Citrouille','Sarrasin','Tournesol','Pressoir',
'Chanvre','Pêche','Navet','Amaryllis','Bœuf','Aubergine','Piment','Tomate','Orge','Tonneau',
'Pomme','Céleri','Poire','Betterave','Oie','Héliotrope','Figue','Scorsonère','Alisier','Charrue',
'Salsifis','Mâcre','Topinambour','Endive','Dindon','Chervis','Cresson','Dentelaire','Grenade','Herse',
'Bacchante','Azerole','Garance','Orange','Faisan','Pistache','Macjonc','Coing','Cormier','Rouleau',
'Raiponce','Turneps','Chicorée','Nèfle','Cochon','Mâche','Chou-fleur','Miel','Genièvre','Pioche',
'Cire','Raifort','Cèdre','Sapin','Chevreuil','Ajonc','Cyprès','Lierre','Sabine','Hoyau',
'Érable à sucre','Bruyère','Roseau','Oseille','Grillon','Pignon','Liège','Truffe','Olive','Pelle',
'Tourbe','Houille','Bitume','Soufre','Chien','Lave','Terre végétale','Fumier','Salpêtre','Fléau',
'Granit','Argile','Ardoise','Grès','Lapin','Silex','Marne','Pierre à chaux','Marbre','Van',
'Pierre à plâtre','Sel','Fer','Cuivre','Chat','Étain','Plomb','Zinc','Mercure','Crible',
'Lauréole','Mousse','Fragon','Perce-neige','Taureau','Laurier-thym','Amadouvier','Mézéréon','Peuplier','Coignée',
'Ellébore','Brocoli','Laurier','Avelinier','Vache','Buis','Lichen','If','Pulmonaire','Serpette',
'Thlaspi','Thimelé','Chiendent','Trainasse','Lièvre','Guède','Noisetier','Cyclamen','Chélidoine','Traîneau',
'Tussilage','Cornouiller','Violier','Troène','Bouc','Asaret','Alaterne','Violette','Marceau','Bêche',
'Narcisse','Orme','Fumeterre','Vélar','Chèvre','Épinard','Doronic','Mouron','Cerfeuil','Cordeau',
'Mandragore','Persil','Cochléaria','Pâquerette','Thon','Pissenlit','Sylvie','Capillaire','Frêne','Plantoir',
'Primevère','Platane','Asperge','Tulipe','Poule','Bette','Bouleau','Jonquille','Aulne','Couvoir',
'Pervenche','Charme','Morille','Hêtre','Abeille','Laitue','Mélèze','Ciguë','Radis','Ruche',
'Gainier','Romaine','Marronnier','Roquette','Pigeon','Lilas','Anémone','Pensée','Myrtille','Greffoir',
'Rose','Chêne','Fougère','Aubépine','Rossignol','Ancolie','Muguet','Champignon','Hyacinthe','Râteau',
'Rhubarbe','Sainfoin','Bâton d''or','Chamerisier','Ver à soie','Consoude','Pimprenelle','Corbeille d''or','Arroche','Sarcloir',
'Statice','Fritillaire','Bourrache','Valériane','Carpe','Fusain','Civette','Buglosse','Sénevé','Houlette',
'Luzerne','Hémérocalle','Trèfle','Angélique','Canard','Mélisse','Fromental','Martagon','Serpolet','Faux',
'Fraise','Bétoine','Pois','Acacia','Caille','Œillet','Sureau','Pavot','Tilleul','Fourche',
'Barbeau','Camomille','Chèvrefeuille','Caille-lait','Tanche','Jasmin','Verveine','Thym','Pivoine','Chariot',
'Seigle','Avoine','Oignon','Véronique','Mulet','Romarin','Concombre','Échalote','Absinthe','Faucille',
'Coriandre','Artichaut','Girofle','Lavande','Chamois','Tabac','Groseille','Gesse','Cerise','Parc',
'Menthe','Cumin','Haricot','Orcanète','Pintade','Sauge','Ail','Vesce','Blé','Chalémie',
'Épeautre','Bouillon blanc','Melon','Ivraie','Bélier','Prêle','Armoise','Carthame','Mûre','Arrosoir',
'Panic','Salicorne','Abricot','Basilic','Brebis','Guimauve','Lin','Amande','Gentiane','Écluse',
'Carline','Câprier','Lentille','Aunée','Loutre','Myrte','Colza','Lupin','Coton','Moulin',
'Prune','Millet','Lycoperdon','Escourgeon','Saumon','Tubéreuse','Sucrion','Apocyn','Réglisse','Échelle',
'Pastèque','Fenouil','Épine vinette','Noix','Truite','Citron','Cardère','Nerprun','Tagette','Hotte',
'Églantier','Noisette','Houblon','Sorgho','Écrevisse','Bigarade','Verge d''or','Maïs','Marron','Panier',
'La Fête de la Vertu','La Fête du Génie','La Fête du Travail','La Fête de l''Opinion','La Fête des Récompenses','La Fête de la Révolution'
$days =
'Grape','Saffron','Chestnut','Crocus','Horse','Impatiens','Carrot','Amaranth','Parsnip','Vat',
'Potato','Strawflower','Winter squash','Mignonette','Donkey','Four o''clock flower','Pumpkin','Buckwheat','Sunflower','Wine-Press',
'Hemp','Peach','Turnip','Amaryllis','Ox','Eggplant','Chili pepper','Tomato','Barley','Barrel',
'Apple','Celery','Pear','Beetroot','Goose','Heliotrope','Common fig','Black Salsify','Chequer Tree','Plough',
'Salsify','Water chestnut','Jerusalem artichoke','Endive','Turkey','Skirret','Watercress','Leadworts','Pomegranate','Harrow',
'Baccharis','Azarole','Madder','Orange','Pheasant','Pistachio','Tuberous pea','Quince','Service tree','Roller',
'Rampion','Turnip','Chicory','Medlar','Pig','Lamb''s lettuce','Cauliflower','Honey','Juniper','Pickaxe',
'Wax','Horseradish','Cedar tree','Fir','Roe deer','Gorse','Cypress Tree','Ivy','Savin Juniper','Grub-hoe',
'Sugar Maple','Heather','Reed plant','Sorrel','Cricket','Pine nut','Cork','Truffle','Olive','Shovel',
'Peat','Coal','Bitumen','Sulphur','Dog','Lava','Topsoil','Manure','Saltpeter','Flail',
'Granite','Clay','Slate','Sandstone','Rabbit','Flint','Marl','Limestone','Marble','Winnowing basket',
'Gypsum','Salt','Iron','Copper','Cat','Tin','Lead','Zinc','Mercury','Sieve',
'Spurge-laurel','Moss','Butcher''s Broom','Snowdrop','Bull','Laurustinus','Tinder polypore','Daphne mezereum','Poplar','Axe',
'Hellebore','Broccoli','Bay laurel','Filbert','Cow','Box Tree','Lichen','Yew tree','Lungwort','Billhook',
'Pennycress','Rose Daphne','Couch grass','Common Knotgrass','Hare','Woad','Hazel','Cyclamen','Celandine','Sleigh',
'Coltsfoot','Dogwood','Matthiola','Privet','Billygoat','Wild Ginger','Italian Buckthorn','Violet','Goat Willow','Spade',
'Narcissus','Elm','Common fumitory','Hedge mustard','Goat','Spinach','Doronicum','Pimpernel','Chervil','Twine',
'Mandrake','Parsley','Scurvy-grass','Daisy','Tuna','Dandelion','Wood Anemone','Maidenhair fern','Ash tree','Dibber',
'Primrose','Plane Tree','Asparagus','Tulip','Hen','Chard','Birch','Daffodil','Alder','Hatchery',
'Periwinkle','Hornbeam','Morel','Beech Tree','Bee','Lettuce','Larch','Hemlock','Radish','Hive',
'Judas tree','Romaine lettuce','Horse chestnut','Arugula or Rocket','Pigeon','Lilac','Anemone','Pansy','Bilberry','Grafting knife',
'Rose','Oak Tree','Fern','Hawthorn','Nightingale','Common Columbine','Lily of the valley','Button mushroom','Hyacinth','Rake',
'Rhubarb','Sainfoin','Wallflower','Fan Palm tree','Silkworm','Comfrey','Salad burnet','Basket of Gold','Orache','Garden hoe',
'Thrift','Fritillary','Borage','Valerian','Carp','Spindle (shrub)','Chive','Bugloss','Wild mustard','Shepherd''s crook',
'Alfalfa','Daylily','Clover','Angelica','Duck','Lemon balm','Oat grass','Martagon lily','Wild Thyme','Scythe',
'Strawberry','Woundwort','Pea','Acacia','Quail','Carnation','Elderberry','Poppy plant','Linden or Lime tree','Pitchfork',
'Cornflower','Camomile','Honeysuckle','Bedstraw','Tench','Jasmine','Verbena','Thyme','Peony','Hand Cart',
'Rye','Oat','Onion','Speedwell','Mule','Rosemary','Cucumber','Shallot','Wormwood','Sickle',
'Coriander','Artichoke','Clove','Lavender','Chamois','Tobacco','Redcurrant','Hairy Vetchling','Cherry','Park',
'Mint','Cumin','Bean','Alkanet','Guinea fowl','Sage Plant','Garlic','Tare','Wheat','Shawm',
'Spelt','Common mullein','Melon','Ryegrass','Ram','Horsetail','Mugwort','Safflower','Blackberry','Watering can',
'Switchgrass','Common Glasswort','Apricot','Basil','Ewe','Marshmallow','Flax','Almond','Gentian','Lock',
'Carline thistle','Caper','Lentil','Inula','Otter','Myrtle','Rapeseed','Lupin','Cotton','Mill',
'Plum','Millet','Puffball','Six-row Barley','Salmon','Tuberose','Winter Barley','Apocynum','Liquorice','Ladder',
'Watermelon','Fennel','Barberry','Walnut','Trout','Lemon','Teasel','Buckthorn','Mexican Marigold','Harvesting basket',
'Wild Rose','Hazelnut','Hops','Sorghum','Crayfish','Bitter orange','Goldenrod','Maize or Corn','Sweet Chestnut','Pack Basket',
'Celebration of Virtue','Celebration of Talent','Celebration of Labour','Celebration of Convictions','Celebration of Honors (Awards)','Celebration of the Revolution'
}
Process
{ # 1792-09-22 = 1 Vendémiaire Ⅰ
if($Date -lt $origin) {Stop-ThrowError.ps1 ('Dates prior to {0:MMMM d, yyyy} are not yet supported.' -f $origin) -NotImplemented}
[int] ${jour de l'année}, [int] ${l'année} = ($Date.Date - $origin).TotalDays, 1
if(${jour de l'année} -gt 364)
{
[int] $lastyear = [math]::DivRem(${jour de l'année},365,[ref]${jour de l'année})
[int] ${past leap days}, [int] ${last year length} = switch($Method)
{
128Year {Get-128YearLeapDay $lastyear}
Coninuous {Get-ContinuousLeapDay $lastyear}
Equinox {Stop-ThrowError.ps1 'Equinox isn''t supported yet' -NotImplemented}
Romme {Get-RommeLeapDay $lastyear}
}
${jour de l'année} -= ${past leap days}
if(${jour de l'année} -gt -1) {${l'année} = $lastyear +1; ${jour de l'année}++}
else {${l'année} = $lastyear; ${jour de l'année} += ${last year length} +1}
}
[int] ${jour du mois} = 1
[int] $mois = 1+[math]::DivRem(${jour de l'année}-1,30,[ref]${jour du mois})
${jour du mois}++
${jour de decade} = 1
$decade = 1+[math]::DivRem(${jour de l'année}-1,10,[ref]${jour de decade})
${jour de decade}++
[pscustomobject]@{
Year = ${l'année}
Année = ConvertTo-RomanNumeral.ps1 ${l'année}
AnnéeUnicode = ConvertTo-RomanNumeral.ps1 ${l'année} -Unicode
Month = $mois
MonthName = $months[$mois-1]
Mois = ${les mois}[$mois-1]
Day = ${jour du mois}
DayOfYear = ${jour de l'année}
Jour = ${les jours}[${jour de l'année}-1]
DayName = $days[${jour de l'année}-1]
Decade = $decade
DayOfDecade = ${jour de decade}
DecadeOrdinal = ${les jours du decade}[${jour de decade}-1]
DecimalTime = '{0:0:00:00}' -f [math]::Floor($Date.TimeOfDay.Ticks / 8640000)
GregorianDate = $Date
} |Add-Member ScriptMethod ToString -Force -PassThru `
{"$($this.Jour) ($($this.DayName)), $($this.Day) $($this.Mois) ($($this.MonthName)) $($this.AnnéeUnicode)"}
}