Holiday Generating Functions
Generates holidays occuring on fixed dates (holiday.fixed)
or on given weekdays of
given months (holiday.weekday.number), for example, the 1st Monday in September.
holiday.fixed(years, month, day)
holiday.weekday.number(years, month, weekday, index)
the desired year(s) for which to generate holidays (for example, 1997:2000).
the month of the holiday (1-12).
the day of the month of the holiday (1-31).
the weekday of the holiday (0-6, 0 is Sunday).
the occurrence of weekday in the month (1-5, or -1 for the last)
for the holiday.
- The holiday.fixed function generates holidays, like Christmas, that
occur on a specified date every year.
- The holiday.weekday.number
function generates holidays that occur on an indexed weekday of
a given month every year, such as Labor day in the U.S., which
is the first Monday of September. Years in which the given dates do
not exist (for example, the 5th Friday in various months) are excluded from
the output (as opposed to generating NA).
returns a time/date object containing the specified holiday in the
# Generate Christmas
holiday.fixed(1994:2005, 12, 25)
# Generate Memorial Day (last Monday in May)
holiday.weekday.number(1994:2005, 5, 1, -1)
# Generate Thanksgiving (4th Thursday in November)
holiday.weekday.number(1994:2005, 11, 4, 4)