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Measures of Time 

Numbers and Percentages

Stephen J. Lurie

and Margaret A. Winker

Measures of time usually are expressed as numerals (see also , Abbreviations, Days of the Week, Months, Eras). When dates are provided, numerals should be used for day and year; the month should be spelled out unless listed in a table. Conventional form for time and dates (11:30 pm on February 25, 1961) is preferred to European or military form (2330 on 25 February 1961). However, use of military time may clarify the time course in figures that depict a 24-hour experiment, times of drug dosing, and the like. For time, if the hour of the day is given, am

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