Kalendertag

Kalendertag is a term used in German-language contexts to denote a day as it appears on a calendar. It refers to the calendar day itself, independent of any specific time or time zone, and is often used in data models, scheduling, and documentation to emphasize the unit of a date rather than a timestamp.

Origin and usage: The word combines Kalender (calendar) and Tag (day). In everyday German, the more common word for a date is Datum, but Kalendertag appears in technical, archival, or formal contexts to distinguish a calendar day from temporal measurements such as clock time or durations. It can appear in software specifications, database schemas, or documentation to indicate the date component without implying a particular moment within the day.

Representation: In practical use, a Kalendertag is typically represented as a date in the Gregorian calendar, such as 2025-12-07, without time-of-day information. Some systems attach a time zone or use a separate time field, while others store only the date component. Formats may vary by standard or implementation, but the core idea is the calendar day.

Context and relevance: Kalendertag serves to clarify data semantics in scheduling, logging, archival work, and inter-system exchange where distinguishing a day from a specific moment is important. It is closely related to terms such as Datum (date) and Kalender (calendar) and is commonly encountered in German-language technical documentation and data models.