What is the Julian calendar format used for dates?

• A. YYDDD
• B. YYYYDDD
• C. YYMMDD
• D. DDMMM

Answer: (A)

In Navy date notation, a Julian date is written as a compact six-digit code that blends the year and the day of the year. The first two digits are the year (YY), and the next three digits represent the day of the year (DDD), counting from 001 for January 1 up to 365 (or 366 in leap years). This format is used to provide a single, unambiguous date stamp without month names or separators.

That’s why the six-digit YYDDD form is the correct choice: it encodes both the year and the exact day of that year in one continuous block. The other formats shown break out month and day or use a textual month, which are calendar date formats rather than the Julian-style date used in many Navy forms. A seven-digit form like YYYYDDD exists in some contexts, but the standard Navy Julian date is six digits with YY and DDD.