7:12 AM
Gil Student
Mishnah Berurah 493:5:
Even for those who follow the prohibition [against shaving and taking a haircut] also prior to Rosh Chodesh Iyar, nevertheless if Rosh Chodesh Iyar falls on Shabbos, since there is the additional joy of Shabbos and Rosh Chodesh, we can allow haircuts on Friday because of respect for Shabbos. One may even get married on that day, since the main meal will be on Shabbos and Rosh Chodesh.(hat tip)
