2359

2359 is a natural number that appears in mathematics, calendars, and clock notation. It can denote a year, a date-time value, or simply a numeric label.

Mathematically, 2359 factors as 7 × 337, making it composite. In Roman numerals it is MMCCCLIX. In other bases it has other representations, but the decimal form is the most common in everyday use.

In timekeeping, 2359 is typically written as 23:59 in the 24-hour clock, representing the last minute of the day. The day then ends at 23:59:59, and the next moment is 00:00 of the following day. The expression 2359 hours is common in military or formal scheduling.

As a year, 2359 AD would fall far in the future. In speculative fiction and discussions of future history, such a year may be used to set distant contexts, technologies, or societal changes. The number also appears where four-digit timestamps are required without punctuation, such as on some timetables, countdowns, or software logs.

Overall, 2359 is primarily notable for its dual role as both a concrete time value and a composite number with straightforward factorization, with its Roman and timekeeping forms often used in practical notation.