what is strange about mr n ath sundays? 

 on sundays a special friend used to come whom Maya thought that a crook

EVERY SUNDAY HE MEETS A MAN AND ODERS 2 MEALS EVERY SUNDAY.

 The strange thing of Mr. Nath's sundays was that almost  every sunday Ramesh carried 2 lunches to Mr. nath's  room. He was tall, fair, and wore spectales.

hope it helps

On every Sunday, Mr. Nath has a same visitor at home who is tall, fair and wears spectacles. this is strange about him