Unnamed

#define SECOND 1
#define MINUTE 60
#define HOUR   60 * MINUTE
#define DAY    24 * HOUR


mytime from_timestamp(int timestamp) {
  mytime temp;

  temp.year = 1970;
  temp.month = 1;
  temp.day = 1;
  temp.hour = 0;
  temp.minute = 0;
  temp.second = 0;

  // YEARS
  while (timestamp > seconds_in_year(temp.year)) {
    timestamp -= seconds_in_year(temp.year);
    temp.year++;
  }

  // DAYS
  while (timestamp > DAY) {
    timestamp -= DAY;
    temp.day++;
    if (temp.day > days_in_month(temp.year, temp.month)) {
      temp.month++;
      temp.day=1;
    }
  }

  // HOURS
  while (timestamp > HOUR) {
    timestamp -= HOUR;
    temp.hour++;
  }

  // MINUTES
  while (timestamp > MINUTE) {
    timestamp -= MINUTE;
    temp.minute++;
  }

  // SECONDS
  temp.second = timestamp;

  return temp;
}