Calendar Gods and Goddesses entered every Indian home thanks to printing press revolution by early 19th century:
These new world gods and goddesses look straight and deep into the devotees eyes.
The devotee who previously used to close her eyes and contemplate /meditate on paramatma , can now 'interact' with the Gods/Goddesses. The calenders are affordable,easy to carry , foldable, durable, and user-friendly too? They also to some extent standardised the indian perception of individual gods like Krishna,Siva, Rama Laxmi, Sita .