Xiaopang and Xiaoya both have birthdays in May, and both are on Wednesdays. Xiaopang's birthday is late, and the sum of the birthdays of the two is 38. How many days is Xiaopang's birthday in May?
小胖和小亚两人在生日都是在五月份，而且都是星期三．小胖的生日晚，又知两人的生日日期之和是38，小胖的生日是5月多少日．
<result>26</result>