Class: E49.Time_Appellation

comment: "This class comprises all forms of names or codes, such as historical periods, and dates, which are characteristically used to refer to a specific E52 Time-Span. The instances of E49 Time Appellation may vary in their degree of precision, and they may be relative to other time frames, "Before Christ" for example. Instances of E52 Time-Span are often defined by reference to a cultural period or an event e.g. 'the duration of the Ming Dynasty'. Examples: Meiji [Japanese term for a specific time-span], 1st half of the XX century, Quaternary, 1215 Hegira [a date in the Islamic calendar], Last century." (string)

http://erlangen-crm.org/091125/E49.Time_Appellation