Many Hindu's will be celebrating Maha Shivaratri tonight as reported on by the BBC:
"Mahashivratri (also known as Shivaratri) is a Hindu festival dedicated to Shiva, who destroys the universe, one of the deities of the Hindu Trinity.
Night and day
While most Hindu festivals are celebrated during the day, Mahashivratri is celebrated during the night and day that come just before the new moon.
Each new moon is dedicated to Shiva, but Mahashivratri is especially important because it is the night when he danced the 'Tandav', his cosmic dance.
It also celebrates the wedding of Shiva and Sati, the mother divine. Night represents evil, injustice, ignorance, sin, violence, and misfortune.
Tradition says that Shiva, like his symbol the new moon, appeared in order to save the world from darkness and ignorance, before the world entered complete darkness." ...(Cont.)...
Here is more information on Mahashivratri
Celebrate Shivaratri 2010 on 12th February
Maha Shivaratri - Wikipedia
About Maha Shivaratri
12th Feb: Maha Shivaratri 2010
and on Lord Shiva
Shiva - Wikipedia,