The odds are not that high against. The papers may state that it's a phenomenal coincidence, but there are hundreds of thousands of births a day or two apart which they never report.
Just as in any random group of 30 or more people there is likely to be some sharing of birthdays. If the newspapers see just the two people who happen to share a birthday then they'll quote it as a 1 in 365¼ chance*, ignoring the fact that the other 28 people present make it better than 50/50

*actually the papers are likely to forget about leap years!

Nigel