Lonely Planet phrasebook says 10th is "Touka", but google translate says its "Daijuu", when i put "10th of April 1993" in it comes out as "10-nichi" (though the voice woman says "touka" not "10-nichi" for some reason) which is right? Are they interchangable?
how would "touka" be pronounced? Would "10-nichi" be "juunichi"?
The 10th of a month is とおか[tooka](not とうか[touka], the pronunciations are the same, though.), whereas the 10th in a series is 第十[daijuu], as you guessed.