Create a holidayfile, test it for the next few years and if you are sure it works correct you can send it to me via mail - i will include it in the next update.
Hehe. MyPhoneExplorer calculates the holidays dynamical. This means if you have set the right values it will calculate the days on the right day for the next 250 years (in the fil there are only the days for one year). So please jump in the calendar of MyPhoneExplorer a few years in future and check if the dates are correct (there are online-calendars on the web which show you the holidays for the future - so you can compare)