das Datum
date
The exact indication of a specific day in the calendar, usually consisting of day, month, and year.
Vergiss nicht, das Datum auf dem Vertrag einzutragen.
Don't forget to enter the date on the contract.

date
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date
The exact indication of a specific day in the calendar, usually consisting of day, month, and year.
Vergiss nicht, das Datum auf dem Vertrag einzutragen.
Don't forget to enter the date on the contract.

'Das Datum' (the date) refers only to the calendar day. A romantic meeting, called 'a date' in English, is 'ein Date' or 'eine Verabredung' in German.
Können wir eine Verabredung für nächste Woche ausmachen?
Can we make an appointment for next week?
To ask for the current date, you use the fixed question: 'Welches Datum haben wir heute?' (What is today's date?). The answer often begins with 'Heute ist der...' (Today is the...).
Entschuldigung, welches Datum haben wir heute?
Excuse me, what is today's date?
To state a date, you use the preposition 'am' followed by the day as an ordinal number and the month. For example: 'am ersten Mai' (on the first of May).
Mein Geburtstag ist am 28. Februar.
My birthday is on February 28.
In Germany, the date is written in the order day.month.year, for example 31.12.2023. This is different from American English (month/day/year).
Bitte senden Sie die Unterlagen bis zum 15.09.2024 zurück.
Please send the documents back by September 15, 2024.
day
'der Tag' and 'das Datum' can both point to a specific point in the calendar. However, 'Tag' is more general: it can mean a particular day or a special occasion. 'Datum' more specifically means the calendar date, for example with day, month, and year. Learners often confuse the words because you hear both in connection with appointments. If you are asking which calendar day is meant, 'Datum' fits better. If you are talking about the whole day or the occasion, 'Tag' is more natural.

Im Kalender notiere ich das Datum für den Arzttermin.
I write the date for the doctor's appointment in my calendar.
Der Tag der Prüfung ist für viele Schüler sehr wichtig.
The day of the exam is very important for many students.