Ascension Day for the year 2015 is celebrated/ observed on Thursday, May 14th.
Ascension Day often called Feast of the Ascension of Jesus Christ, Ascension Thursday and Holy Thursday is held on a Thursday 39 days (40th day of Easter) after Easter Sunday. The day commemorates Jesus Christ's ascension into heaven. Some churches have changed this date depending on the Christian denomination to the following Sunday after Thursday.
Days to Ascension Day 2015
Thursday, May 14th is day number 134 of the 2015 calendar year with -8 years, -17 days until Ascension Day 2015.