There are three occasions a year when Lord Shiva is worshipped and glorified the most. One is Shravan in June-July, another is Masik Shivratri (monthly) and one is Mahashivratri in February-March. These three festivals are exclusively dedicated to Lord Shiva and millions across the Indian subcontinent celebrate it. https://cheap-michaelkors.in.net/what-is-mahashivratri-what-is-its-significance/