For both of them, it's "the other".
another + singular nonspecific countable noun
Let’s meet another day.
I’d like another piece of cake.
the other + specific noun (singular, plural, countable or uncountable)
I have two brothers. One of them lives in Canada. The other brother lives in Japan.
I go to school on Monday and Thursday. I work on the other days of the week.
For more information: http://www.englishcurrent.com/grammar/other-ano...