
der Zeitraum
period / time span
A specific, defined duration or span of time between two points in time.
Der Rabatt gilt nur für den Zeitraum vom 1. bis zum 15. Mai.
The discount is only valid for the period from May 1 to May 15.
period / time span
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period / time span
A specific, defined duration or span of time between two points in time.
Der Rabatt gilt nur für den Zeitraum vom 1. bis zum 15. Mai.
The discount is only valid for the period from May 1 to May 15.
'Zeitraum' is made up of 'Zeit' (time) and 'Raum' (space). You can picture it as a 'space in time'—that is, a clearly defined starting and ending point.
Wir müssen für das Projekt einen genauen Zeitraum festlegen.
We need to set a precise time frame for the project.
To define a span of time, the structure 'im Zeitraum von ... bis ...' (in the period from ... to ...) is often used. To indicate a duration, you use 'für einen Zeitraum von ...' (for a period of ...).
Das Museum ist im Zeitraum vom 10. bis 20. August geschlossen.
The museum is closed during the period from August 10 to 20.
The word 'Zeitraum' (period / time span) is often used in formal, official, or planning contexts, for example in contracts, project plans, or historical reports.
Bitte geben Sie den gewünschten Lieferzeitraum an.
Please specify the desired delivery period.
duration
Both words refer to the time span of a project or activity. „Die Dauer“ describes how long something lasts, whereas „der Zeitraum“ refers to the defined interval between its beginning and end. Use „Dauer“ when asking about the length of time; use „Zeitraum“ when naming the time limits.

Der Zeitraum des Projekts reicht von Januar bis Juni.
The project period runs from January to June.
Die Dauer des Projekts beträgt sechs Monate.
The project lasts six months.