USE IN 2016, 2020, 2024, 2028, 2032, 2036, 2040, ETC.

Convert calendar date into Julian date and vice versa. Input a date and time or a Julian day number to get corresponding conversion. This Julian's Date Calendar helps to track and manage dates based …

The Julian calendar tape may be confusing for beginners, but the significance of the Julian date is still enormous. Astronomers and scientific software use the Julian date today to calculate the number of …

They follow a simple cycle of three normal years and one leap year, giving an average year that is 365.25 days long. That is more than the actual solar year value of approximately 365.2419 days (the …

Dec 13, 2025 · Get today’s Julian date (UTC) and convert any calendar date/time to JD, JDN, MJD and day-of-year (YYDDD). Instant results, reverse conversion, copy buttons.

May 6, 2016 · Julian Date Calendar / Calculator Day-of-Year (JDay) The calculator is bi-directional* Make Calendar Select Month / Day / Year and press the "Show_Calendar" button The Calendar will …

Jun 10, 2025 · Convert between Julian dates and calendar dates instantly. Supports multiple formats, timezones, and auto-updates with accurate results and live time display.

Jul 14, 2025 · Convert between Julian dates and Gregorian calendar dates instantly. Free online calculator for astronomical and historical date conversions.

Julian dates (abbreviated JD) are simply a continuous count of days and fractions since noon Universal Time on January 1, 4713 BC (on the Julian calendar). Almost 2.5 million days have...

Convert Julian day numbers to calendar dates and vice versa. Astronomical and historical date converter for scientific calculations with JD and MJD support.