应该算吧?pub 519里说 "You are treated as present in the United States on
any day you are physically present in the country at any time during the day
.";虽然 "Days you are in the United States for less than 24 hours when you
are in transit between two places outside the United States."不算,但是出入
境不能算是 "transit between two places outside the United States":起点/终点
显然是在美国境内嘛。