Thursday July 7 will be celebrated as Mahakavi Kalidas Din. It is because as per Indian calendar, it is the first day of Aashadh month. His epic Meghadoot starts with following lines :
आषाढस्य प्रथमदिवसे मेघमाश्लिष्टसानु वप्रक्रीडापरिणीत गज प्रेक्षणीय ददर्ष
I am not sure of verbatim meaning, but it describes a black-coloured cloud, which Kalidasa thinks looks like a spectacular elephant ready for playing.
Sigh! I miss the Mumbai monsoon