Chandan Shashti is an auspicious day and vrat which is observed on Shukla Paksha Shashti in Vaishakh Month as per Hindu calendar. In 2018, Chandan Shashti date is April 21.
Chandan Shashti has some significance in Bengali calendar. Women keep fasting or Upvaas on Chandan Shashti and break their fast in the evening after moon rises.
Kashmiri Pandits observe Chandan Shashti vrat in Bhadun Month i.e. Bhadra Month (August – September).
In 2018, it falls in Chithirai Masam of Tamil calendar, Meda Masam of Malayalam calendar and Boishakh Month in Bengali Panjika.