Today Julian Date Calendar 2025. Enter dates in the form. Julian day numbers are a simple day numbering system primarily used by astronomers because of its simplicity.

The aavso’s julian date calendar for 2025 is available for download from the aavso website’s jd calendars page (julian date calendars | aavso) or the jd calendar link on the jd calculator page (julian date. Convert the calendar date to julian date and vice versa.