Diwali is slowly becoming diwala for filmmakers and bollywood actually diwali constitute of pre diwqli, worst time to release a film then you have diwali day which again is worst day to release a film now post diwali day is best and it was showed by unimaginable collections by HNY on day 1 i men except fans no one was predicting 40 crs but it did but then well i don't want to say furthu DARD HOTA HAI AND DUKH BHI i think that this is becoming bad for trending whereas eid and Christmas releases got good trendings and even if eid release don't tend will atleast v they don't trend bad i mean it might be to do something with content
i think that biggest reason is that YOU CAN'T CHOSE TO RELEASE THE FILM BEFORE DIWALI OR ON DIWALI DAY unlike Christmas and eid where film release on eid/christmas day(Bodyguard,Ce/3i) or before christmas and eid(KICK/D3, PK) which gives not only more days but right holidays at right time and makers can choose that which date will be best for their film whereas diwali don't give such choices
take a look at example say KICK released on 26th and got eid on Tuesday and was hugely benefited by it whereas on the other hand JTHJ also had diwali on tuesday but they can't release the film before diwali DHOOM 3, PK and dabangg2 got Christmas benefits in weekdays sprry pk will get and d2 and d3 got but with diwali you can't choose you will have to release it on diwali or day after no even releasing on diwali isn't fruitful as diwali day hampers collections hugely and final collections would be more or leas same whereas eid or christmas don't do that release wherever you want you will be benefited but on diwali you have to release it on diwali day if you release before film suffers it might make up on other days but well you just don't have any damn choice during diwali no freedom as to when release the film so it's compulsory for film to
now these are my views don't know whether I'm right or wrong but i think this might be one of many reasons why EID and CHRISTMAS are becoming better than DIWALI for BOX OFFICE