Prepared by Dr.K.Thilagawathi The word Sivaraatthiri Sivaraatthiri , consists of two words, namely Siva  and raatthiri ;. raatthiri  means night. In Sanskrit, the word Sivam has the meanings like goodness ( nanmai) , auspiciousness ( manggaLam)  and happiness ( inbam) . Hence, Sivaraatthiri is an auspicious night for Lord Siva; it is the night of bliss. On the occasion of Sivaraatthiri ,   being inspired by our devotion to Lord Siva, we fast the whole day and keep vigil at ni