Krishna Ekadashi is the name for the 26th Tithi (lunar day). It's the 11th Tithi of Krishnapaksha. It's nature is Anand Prada, which can be interpreted as "inculcates happiness", "leads to Ananda". It's good for following works: marriage; religious works, Alankar, Upanayana, Devotsava; Vrata, fasting, completion of fasts; jewellery; painting, learning of sculpturing, clothes designing, dress, dance; travel; enter, starting of house, manufacturing of drinks, trade. This day has special religious significance in Hindu tradition, usually it's observed by fasting and almost every Ekadashi has it's own meaning and purpose.

According to classical Brihat Samhita Rudra rules Krishna Ekadashi, thus fasting, devotional activities, and remembrance of Brahman are very favourable. According to Muhurta Chintamani, Vishvadeva (deity of particular class that answer to the concern that no divinity should be omitted from praise (c) Renou, Louis. L'Inde Classique, vol. 1) rule this day.

Being Nanda (that can be translated as "prosperity", "good", "happiness") and ruled by Shukra (Venus), 11th Tithi of Krishnapaksha is suitable for following works or actions: related to clothes; dance, vocal music, festivals, art & sculpture, painting; farming, house, clothes, Aalankar (ornament, decoration); enjoyments, Tantris Kāryas.

During the vedic month Ashwin Krishna Ekadashi becomes Maasa Shoonya Tithi, which is considered unauspicious in succeeding in works started during this Tithi.

Lagna (ascendant or rising sign) during Krishna Ekadashi becomes Tithi Shoonya (Lagna which is ruined by Tithi) for times when it is Dhanu (Sagittarius) or Meena (Pisces). Rohini Nakshatra also becomes Tithi Shoonya if it falls on Krishna Ekadashi. It's considered that all auspicious works done during Tithi Shoonya periods will be destroyed.