Hacker News Reader

You don't need it :) The password must include a capital city, but it can also include other characters to make it a palindrome :)

But then it needs to be divisible by 3 but not longer than 15

And contain a capital letter, a space and the letter 'e'

True, but it's a lot easier if the capital itself is a palindrome as it saves you space to meet the other conditions (or just use a short city name).