How do you normally say calendar and date in Japanese?


If you were to say: `I have to buy a new calendar next month.` or `Look at the
calendar and see when X holiday is?` or `Have you seen the calendar?`, would
you use カレンダー or 暦{こよみ}? Is there a difference between the two?

Also how do you say `date` as in `What is tomorrow's date?` or `What is
today's date?` or `What will be the date next Saturday?`




If you are talking about a standard Western calendar that you buy in a store,
then I would hazard that カレンダー is safe to use. If you want to talk about other
calendar systems, such as lunar, then use 暦.

For asking about a date, you say 何日, as in:

> 今日は何日ですか？ What is today's date?

For asking about what day, you use 何曜日, as in:

> 来週の何曜日がお暇ですか？ What day are you free next week?

For a business setting, one can use 日付:

> 日付の変更がございましたら、ご連絡ください。 Please let me know if there is a change of date.

And for a legal or official setting one can use 期日 for fixed date/settlement
date:

> 期日の変更の申立ては、期日の変更を必要とする事由を明らかにしてしなければならない。 A petition for a change of date
> shall be filed by clarifying the grounds for requiring the change of date.

