Varuthini Ekadashi is observed during Krishna Paksha of Vaishakha month according to North Indian Purnimant calendar and Krishna Paksha of Chaitra month according to South Indian Amavasyant calendar. However both North Indian and South Indian observe it on the same day. at this time it falls in month of March or April in English calendar.
Parana means breach the fast. Ekadashi Parana is ready after sunrise on next day of Ekadashi fast. It is needed to do Parana within Dwadashi Tithi unless Dwadashi is over before sunrise. Not liability Parana within Dwadashi is like to an offence.
Parana should not be done during Hari Vasara. One should wait for Hari Vasara to live down before breaking the fast. Hari Vasara is first one fourth duration of Dwadashi Tithi. This festival celebrate in women’s and wear traditional saree. The most favorite time to break the fast is Pratahkal. One should avoid breaking the fast during Madhyahna. If due to some reasons one is not able to break the fast during Pratahkal then one should do it after Madhyahna.
At times Ekadashi fasting is optional on two following days. It is advised that Smartha with family should observe fasting on first day only. The exchange Ekadashi fasting, which is the second one, is optional for Sanyasis, widows and for those who want Moksha. When exchange Ekadashi fasting is suggested for Smartha it coincides with Vaishnava Ekadashi fasting day.
Ekadashi fasting on both days is optional for staunch devotees who seek for love and affection of Lord Vishnu.