when Bhupati shows Amal his weekly newspaper 'The Sentinel', it can be seen that it is published every Saturday and the date shown is 7 April 1879 but actually 7 April 1879 was Monday.
When Bhupati shows Amal his weekly newspaper 'The Sentinel', he reads the details as " 24th issue of the sentinel dated April the 9th, 1879' but when Amal sees it, the date is printed on the newspaper as 7 April, 1879.