[Doutas]

And there are kanji for the days of the week

月 (getsu) - moon - Monday

火 (ka) - fire - Tuesday

水 (sui) - water - Wednesday

木 (moku) - tree - Thursday

金 (kin) - gold - Friday

土 (do) - earth, soil - Saturday

日 (nichi) - day - Sunday

Those listed readings are so-called 'onyomi' (or sinojapanese readings) which are used in kanji compounds. In fact there is always added 曜日 'youbi' (means a day of a week) creating for example 月曜日 (getsuyoubi) - Monday. But in Japanese diaries, calendars and so on you can see the days marked just by above listed kanji.

Normally, if these kanji stands in the sentence as one word their are read 'tsuki', 'hi', 'mizu', 'ki', 'kane', 'tsuchi', 'hi' ....