日付 and 曜日: calendar dates and days of the week
Compare a date on a form with a meeting’s day of the week, checking which information is actually supplied by a month and day.
Which calendar date
日付, read ひづけ, means a calendar date. 申込書に今日の日付を書いてください。 asks for today’s date to be written on an application form.
日付は六月十日です。 gives the date as June 10. It does not supply a year or a day of the week.
Which day of the week
曜日, read ようび, identifies a day of the week, such as Monday or Tuesday. 会議は何曜日ですか。 asks on which day of the week the meeting takes place.
毎週水曜日に集まります。 says that the group meets every Wednesday. This differs from specifying a single calendar date.
Checking both kinds of information
日付と曜日を確認しました。 says that both the date and the day of the week were checked. Two checked items are explicitly identified.
日付は分かりますが、曜日はまだ確認していません。 says that the date is known, but the day of the week has not yet been checked. Knowing the date is not a report of completing both checks.
Does 日付は六月十日です。 also tell you the meeting’s day of the week?
Show the answer and why
Not by itself. Only the month and day are supplied; additional information such as the year and a calendar is needed to identify the day of the week.