What is a "Names day"?
A names day is a tradition in some countries in Europe and Latin America
that consists of celebrating a day of the year that is associated with one's given name.

The celebration is similar to a birthday.

Day before yesterday : Klaus, Laas, Laus, Nigul, Nigulas, Niilas, Niilo, Nikolai, Nils
Yesterday : Piine, Sabiine

Today : Külli, Küllike, Külliki, Külve, Külvi

Tomorrow : Raid, Raido, Raidu, Raigo, Raigo, Raik, Raiko, Rait
Day after tomorrow : Juta, Juudit