The equivalent of Monday to Sunday is Lunes, Martes, Miyerkules, Huwebes, Biyernes, Sabado, Linggo. Those words came from Spain where Sabado sounds like Sabbath for Saturday. When you mean Yesterday then you say it as Kahapon. For the other day, it is Makalawa. Tomorrow is Bukas while the day after tomorrow is Sa Isang Bukas.