Kalyan Saptami is observed in the Phalgun month in North India. Kalyan Saptami Vrat 2018 date is February 22. The day falls during the Holashtak period in North India and is associated with the upcoming Holi festival.
Kalyan Saptami is observed on the seventh day of waxing phase of moon, or Shukla Paksha Saptami, in Phalgun month.
It is usually observed when Shukla Paksha Saptami falls on Sunday or Tuesday.
It is believed that observing this vrat will help in sin redemption.