Kaldand Yog is considered a bad and inauspicious period in Hindu astrology. This yog is calculated based on nakshatra or birth star. The time period of Kaldand Yog is till the nakshatra on the particular day.
Kaldand Yog time period is to be avoided for travels, exams and financial dealings. The time is also not good for the first meeting with a person or family. All kinds of investments, openings etc should be avoided during the time period.
Kaldand Yoga happens when -
Bharani nakshatra falls on Sunday or Ravivar
Ardra or Arudhara or Thiruvathira nakshatra falls on Monday or Somvar
Magha nakshatra falls on Tuesday or Mangalvar
Chitra or Chithirai or Chithira nakshatra falls on Wednesday or Budhwar
Jyeshta or Kettai or Triketta nakshatra falls on Thursday or Guruvar
Abhijit nakshatra falls on Friday or Shukravar
Purvabhadrapada or Pooruruttathi nakshatra falls on Saturday or Shanivar.
Kaldand Yog is present only when the corresponding nakshatra is present on the particular day of a week. The yog ends on the day when the nakshatra period ends.