answers: 365.25
context: can be calculated using the following formulas (integer division is used exclusively, that is, the remainders of all divisions are dropped): "The months January to December are numbered 1 to 12. For the year, astronomical year numbering is used, thus 1 BC is 0, 2 BC is −1, and 4713 BC is −4712. "JDN" is the Julian Day Number. Use the previous day of the month if trying to find the JDN of an instant before midday UT." The algorithm is valid for all (possibly proleptic) Gregorian calendar dates after November 23, −4713. JDN = (1461 × (Y + 4800 </s> 21st centuries, the date according to the Julian calendar is 13 days behind the Gregorian date, and after 2100 the disparity will widen. The Julian calendar has two types of year: "normal" years of 365 days and "leap" years of 366 days. There is a simple cycle of three "normal" years followed by a leap year and this pattern repeats forever without exception. The Julian year is, therefore, on average 365.25 days long. Consequently, the Julian year drifts over time with respect to the tropical (solar) year (365.24217 days). Although Greek astronomers had known, at least since Hipparchus, a century </s> the old Roman months, the fixed length of the Egyptian calendar, and the days of the Greek astronomy. According to Macrobius, Caesar was assisted in this by a certain Marcus Flavius. The first step of the reform was to realign the start of the calendar year (1 January) to the tropical year by making 46 BC (708 AUC) 445 days long, compensating for the intercalations which had been missed during Caesar's pontificate. This year had already been extended from 355 to 378 days by the insertion of a regular intercalary month in February. When Caesar decreed the reform, probably shortly
question: how many days in a julian calendar year