1) Christian holy day 2) Christian Sunday observance 3) February observance 4) Septuagesima sunday 5) The 3rd sunday before lent 
Septuagesima (in full, Septuagesima Sunday) is the name for the ninth Sunday before Easter, the third before Ash Wednesday. The term is sometimes applied also to the period that begins on this day and ends on Shrove Tuesday, the day before Ash Wednesday, when Lent begins. This period is also known as the pre-Lenten season or Shrovetide. The other ...
• (n.) The third Sunday before Lent; -- so called because it is about seventy days before Easter.
In the Christian church calendar, the third Sunday before Lent; the 70th day before Easter. ...
Sep`tu·a·ges'i·ma noun [ New Latin , from Latin septuagesimus the seventieth, from septuaginta seventy.] (Eccl.) The third Sunday before Lent; -- so called because it is about seventy days before Easter. 
[n] - the 3rd Sunday before Lent (or the 9th before Easter)
Septuagesima Sunday noun the 3rd Sunday before Lent (or the 9th before Easter)