your birthday is: year january february march april may june july august september october november december 1st 2nd 3rd 4th 5th 6th 7th 8th 9th 10th 11th 12th 13th 14th 15th 16th 17th 18th 19th 20th 21st 22nd 23rd 24th 25th 26th 27th 28th 29th 30th 31st 　　追女孩子，你知道她自己多少岁了，但你知道她来到世界多少天了吗？多少月了吗？多少周了吗？如果当她知道你知道她所有的这些，是否对你刮目相看呢？ 你只要输入4位数的出生年份，然后在下拉框中选择自己的出生月份和日期，再按“计算”按钮，本系统就可以精确计算出你的年龄、月龄、周龄直至时分秒。怎么样，赶紧查一查，把握好实实在在的每一天吧！