Maha shivratri is celebrate in march month in all india or world.

Mahashivaratri is a Hindu festival celebrated with great enthusiasm all over India. It falls on the13th night/14th day in the month of Magh or Phalgun as per the Hindu calendar. The festival is dedicated to Lord Shiva and is celebrated by rejoicing and praying to Lord Shiva for wellness. Huge crowd of devotees gather outside Lord Shiva’s temples early in the morning for prayers.
Devotees present offerings in the form of coconut, fruits, Bilva (Bael) leaves and especially made sacred food for the occasion. Devotees light candles and Diyas throughout the night and this is indicated as a spiritual manifestation.
Shivaratri is the wedding day of Lord Shiva and Parvati. It is also believed that Lord Shiva performed ‘Tandava’, the dance of the primal creation, preservation and destruction on this auspicious night of Shivaratri. According to another popular legend, described in Linga Purana, it was on Shivaratri that Lord Shiva manifested himself in the form of a Linga for the first time. Since then, the day is considered to be extremely auspicious by the devotees of Shiva and they celebrate it as Maha Shivaratri – the grand night of Shiva. Shiva devotees observe strict fast on Maha Shivaratri, with many people having only fruits and milk and some not even consuming a drop of water. Worshippers dutifully follow all the traditions and customs related to Shivaratri festival, as they strongly believe that sincere worship of Lord Shiva, on the auspicious day, releases a person of his sins and also liberates him from the cycle of birth and death. As Shiva is regarded as the ideal husband, unmarried women pray for a husband like Him, on Shivaratri. On the other hand, married women pray for the well being of their husbands, on this auspicious day. On Maha Shivratri, devotees wake up early in the morning and take a bath, if possible in river Ganga. After wearing fresh clothes, they visit the nearest Shiva temple, to give ritual bath to the Shiva Lingum (with milk, honey, water etc). The worship continues the whole day and whole night. Jaagran (nightlong vigil) might also be observed in Lord Shiva temples, where a large number of devotees sing hymns and devotional songs, in praise of Lord Shiva. In the morning,g devotees break their fast by partaking the prasad offered to Lord Shiva, after the aarti, the night before.