Difference between revisions of "Module:Calendar date/recurring"
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blackwiki>Howcheng |
blackwiki>Howcheng |
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| Line 29: | Line 29: | ||
dateparts = os.date("*t", date) | dateparts = os.date("*t", date) | ||
end | end | ||
| + | return date | ||
-- add the correct number of weeks | -- add the correct number of weeks | ||
| Line 36: | Line 37: | ||
--end | --end | ||
| − | local result = os.date("%Y-%m-%d", date) | + | --local result = os.date("%Y-%m-%d", date) |
| − | return result | + | --return result |
end | end | ||
return p | return p | ||
Revision as of 00:07, 27 March 2019
Documentation for this module may be created at Module:Calendar date/recurring/doc
--[[
Calculates the Gregorian date of a recurring holiday that varies year-to-year, but follows the rule "Nth [day of week] of [month]"
"month" = month number (1 to 12)
"weeknumber" = number of week (1 to 4, or -1 to mean "last")
"dayofweek" = number that represents the day of the week, where 1 = Sunday and 7 = Saturday
"year" = Gregorian calendar year
]]
require('Module:No globals')
local p = {}
function p.calculate(frame)
local args = frame.args
local ONE_DAY = 86400 -- number of seconds in one day
local year = tonumber(args.year)
local month = tonumber(args.month)
local date = os.time{year=year, month=month, day=1}
local dateparts = os.date("*t", date)
-- find the first [dayofweek] of this month
local dayofweek = tonumber(args.dayofweek)
while not dateparts["wday"] == dayofweek do
date = date + ONE_DAY
dateparts = os.date("*t", date)
end
return date
-- add the correct number of weeks
--local weeknumber = tonumber(args.weeknumber)
--if weeknumber > 1 then
--date = date + ((weeknumber - 1) * (7 * ONE_DAY))
--end
--local result = os.date("%Y-%m-%d", date)
--return result
end
return p