anachronistic

adj. obsolete, out of date; not properly dated, not assigned to the correct time period (of a person, object or event)

For the card strategy game, see Anachronism (game). An anachronism (from the Greek "ανά," "against," and "χρόνος," "time") is anything that is temporally incongruous—that is, it appears in a temporal context in which it seems sufficiently out of place as to be peculiar, incomprehensible or impossible. The item is often an object, but may be a verbal expression, a technology, a philosophical idea, a musical style, a material, a custom, or anything else closely enough bound to a particular period as to seem odd outside it.
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Adjective
1. chronologically misplaced; "English public schools are anachronistic"
(synonym) anachronic, anachronous
(similar) asynchronous

(a.)
Erroneous in date; containing an anachronism.
  

Synonyms and related words:
ahead of time, antedated, beforehand, behind time, behindhand, dated, early, foredated, late, metachronistic, misdated, mistimed, out of date, out of season, overdue, parachronistic, past due, postdated, prochronistic, tardy, unpunctual, unseasonable,