+80d often denotes a span of [Time](/wiki/Time), specifically eighty [Days](/wiki/Day). This duration can mark a significant period in projects, natural cycles, or historical events, influencing [Planning](/wiki/Planning) and [Calendars](/wiki/Calendar).
+## See also
+- [Duration](/wiki/Duration)
+- [Measurement](/wiki/Measurement)
+- [Cycle](/wiki/Cycle)
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