now = new Date
thisYr = now.getYear()
if (thisYr < 1900) {
thisYr = thisYr+1900
}
nextYr = thisYr+1

ricorrenza = new Date(thisYr,1,19)
if (ricorrenza.getTime() < now.getTime()) {
ricorrenza.setYear(nextYr)
}
function dayToDays(inTime){
return (Math.floor(inTime.getTime()
/(1000 * 60 * 60 * 24)))
}
function daysTill(inDate) {
return dayToDays(inDate) - dayToDays(now)
}