Works in following fields are prescribed for Sunday: coronation, service to  government / king, worshipping king, service & employment; works related to fire, weapon making & usage, war, bravery, travel, thief catching; doctor, transaction of medicine; purchase of cows, bullocks & animals; works related to gold, silver, copper, wood; bones-skin-hides, Manglik works, Yagya, teaching Mantras (Agni Mantras), religious discourse, music learning; wearing of new clothes, woolen clothes; mountain, stones, dessert, forest, trees, usage of forest items; snake, animal rearing & husbandry; food grain; trade.

It's nature is Ugra Prada, which can be interpreted as "increase of agression". It's good for following works: hunting, poisoning, making of fire arms, fire, gambling; drinking, making alcohol drinks; quarrels, opposition / encounter. Being Rikta (that can be translated as "empty hands", "scanty", "destitute"), it is also suitable for following works: arresting, poisoning, uses of weapon, surgery, igniting fire. Travelling in any direction is strictly prohibited and should be avoided during Krishna Navami.

Related Devatas: Durga, Nagas (Sarpas), Ashtavasu, Shani.
Sompad Tithi month: none.
Manvadi Tithi month: none.
Maasa Tithi Shoonya: Chaitra.
Tithi Shoonya Lagna: Karkata, Simha, Vrshchika.
Tithi Shoonya Nakshatra: Krttika.
Surya Rashi for Dagdha Tithi: none.

Specific actions and works that should be initiated during Chandra in Krttika: sharp and horrible works, courage, destruction of enemy, weapon, war, treaty, gathering, discussion, declamation, meeting, preparation of medicine, medical knowledge, iron, Mani, Aganayadhan; Yagya, Mundan, Upanayana, worshipping of animals, garden, guerilla war / attack, making fire place for cooking, tying animals. Money shouldn't be lent or borrowed during Chandra in Krttika.

Gara is benefic, moving Karana, ruled by Bhumi, suitable for: sowing, ploughing, farming, seeds, house, support related. Guru (Jupiter) is Graha that rules Gara.

Ganda is the 10th Nitya (Naisargika) Yoga, which is ruled by Agni and considered to be malefic one (especially first 6 Ghatis of it). It is one of 7 other malefic Yogas of lower order (comparing to Vyatipata and Vaidhriti which are considered malefic Yogas of higher order), and its effect can be described as "knot", "obstacles". Shani is a Graha, who's ruling Ganda.

Analysing Muhurta, Chandra in Mesha (Aries) gives bad Chandrabala if one's Janma Rashi (disposition of Chandra in certain sign at birth time) is Kanya (Virgo), Vrshchika (Scorpio) or Vrishabha (Taurus).