Astro Calendar for October 2023 for Seattle, USA

About this Website

Hello, I'm Phil Mosby and I created this website.

I am an astro/landscape photographer and fine-art print maker by trade, but I've also been writing code and creating websites for over 20 years.

I initially started creating this website for my own personal usage, to assist in the formatting of astronomical data for my annual Nights on Earth Fine Art Wall Calendar and Stargazer's Guide to the Night Sky. I soon realized it might also have value as an "addendum" of sorts for those who purchased the calendar (and anyone else!) to be able to see and print a custom calendar with times of events for their own location in the same style as presented in the print calendar.

I also wanted it to be fun to look at, and something you'd be stoked to have open in full screen on your extra monitor or printed on your wall. I hope I've succeeded!

If you'd like to support this project, please consider purchasing a custom 2025 Wall Calendar featuring all of the same data in the calendar calibrated to your lcoation anywhere on earth, alongside 13 gorgeous nightscape or deep space photos! They make awesome gifts for any space lover, and the proceeds are what make it possible for me to spend my time creating things like this website. Thank you to all who have purchased a calendar or print over the years I couldn't do this without you!

If you have any feedback or questions, feel free to reach out to phil@phil.camera.

Other Websites from Phil Mosby:

Phil.Camera

(↑ My Astro/Landscape Photography Website)

NatureMixer.com

(↑ My Free Audio-Video Nature Ambience Generator)

Credits, Further Reading, and Thanks

Nights on Earth is powered by a hand-curated database of astronomical events that I've been compiling for the last 4 years, alongside real-time data from several free and paid APIs or generated on the fly based on the best available calculations.

You'll see links to the websites that I use to research this information throughout the calendar, those links will lead to more specific information about the astronomical events that they're related to. Every one of these websites is worth bookmarking and thoroughly perusing.

The websites, tools, and services that have been most instrumental to the research and development of this project are:

www.Astropixels.com

(↑ Planetary Ephemeris Data Courtesy of Fred Espenak)

github/andrmoel/astronomy-bundle-js

(↑ Some of our Moon & Sun data is calculated in real time thanks to this incredible free library)

In-The-Sky.org

(↑ The guy who created this brilliant website literally wrote the book on planetary movement -

I own it, you should too!)

SeaSky.org

(↑ An awesome resource for yearly events and a wealth of astronomical information that I reference frequently)

swpc.noaa.gov

(↑ NOAA's Space Weather Prediction Center - the source of my K Index data and an awesome resource for Aurora chasers and anyone interested in the Sun and Space Weather)

TimeAndDate.com

(↑ Their paid API is a source of many of our Sun and Moon figures, and their website is an indespensable tool for researching astronomical movements)

AMSmeteors.org

(↑ The American Meteor Society)

The Star Walk 2 Android App

(↑ A great app for night sky visualization in the field or while planning)

NakedEyePlanets.com

(↑ An indispensable guide to planetary visibility)

IMO.net

(↑ The International Meteor Organization)

Geonames.org

(↑ The source of the geographic data that powers the location search function on this website)

SolarSystem.nasa.gov

(↑ Media-rich Solar System exploration from NASA)

Change Log

This is a list of significant changes that have been rolled out from July 2024 onward. If you find a website bug that needs attention please notify phil@phil.camera.

7/12/2024 Major Update Including...

• Greatly improved location search functionality.

• Increased location database from 6,000 locations to 200,000+.

• Various visual UI improvements.

• Fixed a scrolling bug that affected some users when viewing daily details.

• Added Aurora Borealis event when today's K Index is > 3 for those in Latitudes North or South of +/- 49°, and for all locations when K Index > 5.

• Added current K Index datapoint for current day.

• Fixed a glitch that caused incorrect Lunar illumination measurement when the moon does not pass meridian on a given day.

• Integrated Astronomy-Bundle-JS for on the fly Sun and Moon calculations. Currently this has only lead to the addition of Lunar Libration, however many new metrics will be rolled out in future updates.

• Additional Sources added to the above list.

• Created this Change Log :)

2025 Wall Calendars!

After several years of development I am thrilled to announce that Custom 2025 Nights on Earth Wall calendars are now available for pre-order! Thousands of people around the world have enjoyed my wall calendars over the last three years, but it has always been my dream and ambition to offer them with data generated custom to each customer's location, and 10's of thousands of lines of computer code later, that dream is finally a reality!

Nights on Earth 2025 is jam packed with the same type of astronomical information that you'll find on this website, lovingly printed alongside 13 of my best Nightscape photos or 13 incredible images from the James Webb Space Telescope. The sun and moon rise and set times, moonphase, and many other datapoints in the calendar will be generated specifically for your calendar for maximum accuracy!

If you only care about the photos, or are in the greater Lake Tahoe area (or within 1 or 2 degrees of 39° N Latitude) you may find that my traditional "Press-Printed" calendar is accurate enough. It can be ordered here. However, if the idea of having sun and moon times in particular customized for your specific location is appealing, or if you'd prefer deep space photos from JWST instead of Nightscape photos (photos that show the view of the night sky in the context of Earth) please click below to customize your calendar.

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Moon Info

Phase:

Moonrise:

Moonset:

Meridian:

Illumination:

Distance:

Libration Lat:

°

Libration Lng:

°

Sun Info

Sunrise:

Sunset:

Day Length:

Astronomical Twilight:

Nautical Twilight:

Civil Twilight:

Submitted by:

Learn More:

Submitted by:

Learn More:

Suggest an Astronomical Event for

Suggest an Astronomical Event

Shopping Cart

Calibrated to:

Photos:

Price Each:

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Nothing in your cart yet! Click here to order a 2025 wall calendar.

Flat Rate US Shipping: $4.99

Lovingly printed, produced, and shipped from the United States. Shipping via USPS 1st Class Mail for single calendars, or Priority Mail for all quantities of two or more. PO Boxes are OK.

International Ordering Coming Soon

Custom calendars can currently only be shipped to addresses in the United States. A slightly different format will be available for worldwide delivery by the end of September, please check back soon!

This is a PRE-ORDER

After months of refinement we're just about ready to start the presses! Production will begin in October, and depending on demand your particular order may not ship until November or early December. All orders placed by Dec 1st are guaranteed to arrive before Christmas.

I understand this is a pre-order:

Total: $

Check out with Stripe | Buy Now with Stripe

Customize your 2025 Wall Calendar:

✨ Now Available for Pre-Order $29.99 ✨

Nights on Earth 2025 is a premium wall calendar & stargazer's guide to the night sky, created by photographer Phil Mosby. It features a wealth of astronomical datapoints, calibrated to your location, alongside 13 gorgeous Nightscape or Deep Space photos.

It is currently available for pre-order and production will begin in early October! All US orders placed by Dec 1st are guaranteed before Christmas.

Calendar Specs: Nights on Earth is a 12" x 12" (12" x 24" when open on the wall) custom 2025 wall calendar printed on heavy paper stock and ready to hang.

Calibrated to: •

① Choose location for custom astronomical times:

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① Choose location for custom astronomical times:

Detect My
Location

Search for
Location

My Location:

Choose from locations near you:

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② Choose Photos:

Nightscape Photos

Fine art astro-landscape photos captured in the American West by photographer Phil Mosby.

Deep Space Photos

Beautiful & fascinating deep space photos captured by the James Webb Space Telescope.

③ Review Your Calendar:

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Please return to Step 1 above to choose your location. You must select it by clicking on the blue button.

Your Custom 2025 Nights on Earth Wall Calendar:

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Welcome to NightsOnEarth.com, a customizable, free astro-calendar to help you plan your stargazing, created by photographer Phil Mosby. Select your location below for the most accurate results. Happy Nights!

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