Krishna Dashami is the name for the 25th Tithi (lunar day). It's the 10th Tithi of Krishnapaksha. It's nature is Saumya Prada, which can be interpreted as "soberness and clearness increase", "one that leads to placid state, state of happiness". It's good for following works: Upanayana, Alankar, Manglik works, peaceful and Paushtik works; marriage; installation; travel, conveyance; actions related to elephants, horses; enter; government works.

According to Muhurta Chintamani and Brihat Samhita Dharmaraja (Deity who's responsible for everything that's related to Dharma and righteous way of living) rules Krishna Dashami, thus it is auspicious for all acts of virtue, religious functions, spiritual practices and other pious activities. As for Poorva Kalamrita, Nāgas rule the 10th Tithi, thus, Krishna Dashami also is auspicious period for gaining wisdom, secret knowledge. Nāgas also are related to rebirth, administering medicine, the purging of poisons, and surgery, as well as waters (rivers, lakes, seas, and wells) and are generally regarded as guardians of treasure.

Being Poorna (that can be translated as "full", "complete" or "perfect") and ruled by Guru (Jupiter), 10th Tithi of Krishnapaksha is suitable for following works or actions: marriage, Upanayana, Manglik works, travel, tourism, coronation, peaceful & Paushtika actions.

During the vedic month Ashwina Krishna Dashami becomes Maasa Shoonya Tithi, which is considered inauspicious in succeeding in works started during this Tithi.

If Sūrya (Sun) transits through Simha (Leo) or Vrshchika (Scorpio) during Krishna Dashami, it becomes Dagdha Tithi. Dagdha Tithis are known as inauspicious for starting any kind of work. Rishi (sage) Brihaspati also says that if Dagdha is present either for Lagna or Tithi then it inflicts death.

NB! There're no Tithi Shoonya Lagnas or Nakshatras for Krishna Dashami that makes it extremely auspicious day for any activity (taking into consideration pre-cautions mentioned above).