Denshi Jisho — Online Japanese dictionary

六日 むいか 1: sixth day of the month;
2: six days
Common word, Noun 
六日 むゆか 1: sixth day of the month;
2: six days
Out-dated or obsolete kana, Noun 
六日 むよか 1: sixth day of the month;
2: six days
Out-dated or obsolete kana, Noun 

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