Je was op zoek naar: isleapyear (Engels - IJslands)

isleapyear(year)
dayofyear( ár; mánuður; dagur)

isleapyear(2000) returns true
iseven( 12) skilar true

the function isleapyear() returns true if the given year is leap.
fallið isleapyear () skilar "satt" ef gefið ár ef hlaupár.

currentdate, currentdatetime, currenttime, date, date2unix, datedif, datevalue, day, dayname, dayofyear, days, days360, daysinmonth, daysinyear, eastersunday, edate, eomonth, hour, hours, isleapyear, isoweeknum, minute, minutes, month, monthname, months, networkday, now, second, seconds, time, timevalue, today, unix2date, weekday, weeknum, weeks, weeksinyear, workday, year, yearfrac, years
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