Days of the Week

The lesson that introduces the regular days of the week is Lesson 5 – Numbers, months and days.

Regular
星期一xīngqīyīMonday
星期二xīngqī’èrTuesday
星期三xīngqīsānWednesday
星期四xīngqīsìThursday
星期五xīngqīwǔFriday
星期六xīngqīliùSaturday
星期日 or 星期天xīngqīrì or xīngqītiān Sunday
More formal
周一zhōuyīMonday
周二zhōu’èrTuesday
周三zhōusānWednesday
周四zhōusìThursday
周五zhōuwǔFriday
周六zhōuliùSaturday
周日zhōurì  Sunday
Casual
礼拜一lǐbàiyīMonday
礼拜二lǐbài’èrTuesday
礼拜三lǐbàisānWednesday
礼拜四lǐbàisìThursday
礼拜五lǐbàiwǔFriday
礼拜六lǐbàiliùSaturday
礼拜日 or 礼拜天lǐbàirì or lǐbàitiān Sunday