do not start anything new or business during Vyatipata And Vaidhriti yoga

Vyatipata AND Vaidhriti AND Atiganda  yogas are considered inauspicious for all good activities. Hence it is excluded from Good Muhurat timings drink panchang says. you can check vyatipata timings during a year here.

https://www.drikpanchang.com/panchang/yoga/daily/vyatipata-yoga-date-time.html

vyatipata AND Vaidhriti along with bhadra karana is also known as the Visntita Karana or Vishti are even capable to destroy even Amrita Yoga.

https://vedictime.com/en/library/panchanga/nityayoga/vyatipat

but Vyatipata yoga is Appropriate Time for Performing Shraddh as per puranas.