Changing one's zakaat date
Q: I have always had my Zakaat anniversary as the 15 of Ramadaan. If I wish to change this date is it possible? Let's say I wish to from next year change my year to 15 Shabaan. I will do all my calculation on that date and give Zakaat at 2.5%. Is this possible? Alternatively, if the date I wish to use in future is 15 Shawaal, how would I put this into effect? Bearing in mind that this will then make it a 13 month year.