panguni uthiram (tamil:பங்குனி உத்திரம்) (also known as meena uttara-phalguni in sanskrit) is a day of importance to tamil hindus. it falls on the day the moon transits in the asterism or nakshatram of uttara-phalguni or uthiram in the twelfth month of the tamil calendar i.e. panguni. it is the purnima or full moon of the month of panguni (பங்குனி 14 march - 13 april). this coincides with the hindu calendar month of phalguna / chaitra.