1 - One theory is that that is the day that St. Patrick died. Since the holiday began in Ireland, it is believed that as the Irish spread out around the world, they took with them their history and celebrations. The biggest observance of all is, of course, in Ireland. With the exception of restaurants and pubs, almost all businesses close on March 17th. Being a religious holiday as well, many Irish attend mass, where March 17th is the traditional day for offering prayers for missionaries worldwide before the serious celebrating begins.
2 - On 7 of january
3 - On 25 of december
4 - On 9 of may
5 - сам(а) напиши когда у тебя день рождение по образцу выше
6 - March, 5