also: つごもり · みそ · かいじつ
last day of the month; month-end day
A noun for the final day of any month. In ordinary modern speech 月末 is more common for 'the end of the month'; 晦日 and especially つごもり have a more traditional or literary feel. 十二月の晦日 is 大晦日, New Year's Eve.
See also: 月末
We close the books on the last day of every month.
The last day of December is called Ōmisoka, New Year's Eve.
The last day of this month is the 31st.
Please finish the payment by the last day of the month.
Attested older or literary reading for 晦日.
Rare Sino-Japanese-style reading of 晦日; not the normal everyday reading.
Older short kanji spelling with the reading つごもり; mainly useful for literary or historical texts.
Rare attested reading of 晦; included mainly to help recognize or search unusual spellings.