In Taiwan ( Republic of China ) , the legal birthday of a leapling is February 28 in common years : If a period fixed by weeks , months , and years does not commence from the beginning of a week , month , or year , it ends with the ending of the day which proceeds the day of the last week , month , or year which corresponds to that on which it began to commence .
In Taiwan , the law says that the birthday of a leapling is February 28 in years that are not leap years .