/**
* Get the prev day of the specified weekday. If today is the specified weekday, then return one
* week before now.
*/
public Abstime prevWeekday(int weekday) {
Abstime t = prevDay();
while (t.getWeekday() != weekday) t = t.prevDay();
return t;
}
/**
* Get the next day of the specified weekday. If today is the specified weekday, then return one
* week from now.
*/
public Abstime nextWeekday(int weekday) {
Abstime t = nextDay();
while (t.getWeekday() != weekday) t = t.nextDay();
return t;
}