Discovered by accident, this manuscript page provides graphical insight to astronomy in medieval times, before the Renaissance and the influence of Nicolaus Copernicus, Tycho de Brahe, Johannes Kepler, and Galileo. The intriguing page is from lecture notes on astronomy compiled by the monk Magister Wolfgang de Styria before the year 1490 at Melk Abbey in Austria.
Julian Date Calculator App | The sell-by date for eggs can be up to 45 days after packing. Every egg carton has a code on its side; the last 3 numbers are the Julian date. Numbers from 001 to 365 correspond to a day of the year: the packaging date. 001 is Jan 1st and 365 is Dec 31st. For freshness, select the highest number you can find (the numbers wrap around in Jan). Or just use the app to convert the number to the packing date.
Lunar-Solar Calendar used by early Christians to observe Sabbath Day-- On the ancient calendar, the seventh-day Sabbath always falls on the same dates of every month. On the Biblical lunar-solar calendar, each lunation (or lunar month) always begins with a New Moon day, which is in a class of worship day all by itself. Six work days follow on the second through seventh of the month. The seventh-day Sabbath always falls on the 8th, the 15th, the 22nd and the 29th of every lunar month.