19752020

19752020 is the concatenation of the two calendar years 1975 and 2020. It is not a widely recognized term with a formal definition in history, science, or library science, but it appears in some contexts as a compact label or identifier. In data management and metadata, 19752020 can be used to indicate a time span or to serve as a shorthand for a longitudinal interval that covers the years from 1975 through 2020, inclusive. In digital archives, publications, or cataloging systems, the string may accompany files, datasets, or collections to communicate the period they pertain to, without requiring a longer date range notation.

Because there is no universal convention, the exact interpretation of 19752020 depends on the issuing institution or the specific dataset. Analysts encountering the term should consult the associated metadata or documentation to determine the intended meaning, such as whether the label signifies the time period, a version, or a project identifier. The usage is generally pragmatic, aimed at simplifying labeling, indexing, or cross-referencing across items that span multiple years.

In practice, 19752020 reflects broader practices of compact period labeling and data curation. It illustrates how numeric strings can function as identifiers beyond standard date formats when embedded in cataloging or research workflows. See also: year range, time period labeling, data curation.