Start Here
Start with today, then try your birthday. Explore your observing window, calendars, Sky Notes, charts, and observing tools with our reader’s guide.
Start HereAlexander Ferrari Miller presents
Star Almanack
A Natural Philosopher’s Guide to the Night Sky — precise astronomy underneath, practical observing guidance on the page.
Front Matter
The reconstructed opening collection, symbol key, observing conventions, constellation explanations, and mathematics—with recovered manuscripts and unfinished sections identified.
Read the Front MatterText and Stories
The opening text, reader’s guide, and original stories behind the Almanack—including the two rabbis, the imagined Tyson argument, and the question of my grandmother’s birth century.
Read the Text and StoriesCalendar
Find the ISO week for any month and day across years, or browse daily zodiac days, observing events, and weekly planetary positions.
Open the CalendarNatural Calendar
Compare the numbered calendar days in each astronomical zodiac month, seasonal totals, and natural leap years from 2025 through 2037.
Open the Natural CalendarNight Sky
Observer-first guidance for finding and understanding what is visible in the sky.
Astronomical Clock
Explore civil, mean solar, apparent solar and sidereal time, plus the calendar season crossing your meridian now.
Open the Astronomical ClockEphemera
Generate observer-specific positions and rise/set calculations for the Solar System.
Open EphemeraEclipses
Why solar and lunar eclipses happen, what their different types mean, how to observe them, and a catalog of individual eclipse cards.
Read About EclipsesMeteor Showers
Explore annual showers, nominal peak times, radiant constellations, reference rates, and Moon conditions, with observing notes in the weekly calendar.
Read About Meteor ShowersConstellations
Explore the names, meanings, and histories of all 88 constellations, with a card for each and Serpens treated as one.
Explore the ConstellationsChart Library
Explore complete constellation and asterism atlases, seasonal panoramic skies, and curated astronomical charts.
Open the Chart LibraryObserver-First Method
The Almanack starts with what an observer wants to know: when to look, where to look, and what familiar sky landmarks will help.
Read the MethodValidation
Regression cases and diagnostics preserve the difference between a pleasing result and a reproducible astronomical calculation.
See Validation