Maha Shivratri

Maha Shivratri  is a festival celebrated every year on the 13th night/14th day in the Krishna Paksha (waning moon) of the month of Maagha (as per Shalivahana or Gujarati Vikrama) or Phalguna (as per Vikrama) in the Hindu Calendar (that is, the night before and day of the new moon). The festival is principally celebrated by offerings of Bael (Bilva) leaves to the Lord Shiva, all day fasting and an all night long vigil. Cannabis is traditionally used as an offering for Lord Shiva and his followers. Per scriptural and discipleship traditions, the penances are performed in order to gain boons in the practice of Yoga and meditation, in order to reach the goal more swiftly and avoid rebirth.
The twelve Jyotirlingas (lingams of light) are sacred shrines of Lord Shiva, and centres for his worship. They are known as Swayambhus, meaning the lingams sprung up by themselves at these places and temples were built there afterwards.
Twelve Jyotirlingas
The names and the locations of the 12 Jyotirlingas are mentioned in the Shiva Purana (Śatarudra Saṁhitā,Ch.42/2-4). These shrines are:

• Somnath Temple • Mallikarjun Temple • Mahakaleshwara Temple • Omkareshwar Temple
•Vaidyanath Temple • Bhimashankar Temple • Rameshwaram Temple • Nageshwar Temple
• Vishwanath Temple • Trimbakeshwar Temple • Kedarnath Temple • Grishneshwar Templ