![Celebration of Pentecost.](http://c.tadst.com/gfx/300h/whitsunday.jpg)
Whit Sunday
Many Christians all over the world annually observe Pentecost, also known as Whitsunday or Whit Sunday.
Many Christians all over the world annually observe Pentecost, also known as Whitsunday or Whit Sunday.
The Christian feast of the Assumption of Mary is on or around Aug 15 in most countries. A few celebrate Assumption Day at other times of the year.
How does the 12-hour clock system work? Is midnight 12 am or 12 pm?
Why do many countries set the clocks back and forth an hour twice a year?