Éphémérides nautiques 2026

Your Essential Companion for Celestial Navigation in 2026
Imagine sailing the open ocean, far from the reach of GPS signals, with nothing but the stars to guide you. The 2026 Nautical Almanac makes this a reality by providing mariners with the most accurate and comprehensive astronomical data available. Published annually, this almanac is the gold standard for celestial navigation, trusted by professional sailors, long-distance cruisers, and ocean racers worldwide. Whether you're navigating the Atlantic, Pacific, or any other vast expanse, this book ensures you can determine your position with a sextant, even when electronic systems fail. It’s not just a tool—it’s your backup plan for safe, autonomous navigation.

Precision Data for Every Day of the Year
This almanac is packed with essential information to keep you on course. It includes daily ephemerides for the sun, moon, planets, and 57 navigational stars, providing critical data such as declination, right ascension, and Greenwich Hour Angle (GHA). You’ll also find detailed tables for the vernal point, equation of time, and lunar phases, allowing you to calculate your position with pinpoint accuracy. The book features permanent data sections, including symbols, notations, celestial charts, and interpolation tables, making it a complete, standalone resource for celestial navigation. With 496 pages of meticulously calculated data, it’s designed to meet the needs of even the most demanding navigators.

Designed for Mariners, by Experts
Published under the authority of the Bureau des Longitudes, this almanac guarantees the highest level of accuracy and reliability. Its compact 16 x 24 cm format is perfect for stowing in your navigation station, while its durable paperback construction ensures it withstands the rigors of life at sea. Weighing just 1 kg, it’s lightweight yet packed with everything you need for safe navigation. Whether you're a professional mariner required to carry it onboard or a recreational sailor preparing for a transoceanic adventure, this almanac is your key to mastering celestial navigation.

More Than Just a Book—A Lifeline at Sea
In today’s digital age, it’s easy to rely on electronic navigation systems. But what happens when those systems fail? The 2026 Nautical Almanac is your insurance policy, offering a tried-and-true method for determining your position using the stars. It’s a must-have for anyone who values safety, independence, and the timeless art of celestial navigation. Don’t leave shore without it—because when you’re out on the water, preparation is everything.

The 2026 Nautical Almanac is an annual publication designed for celestial navigation, offering precise astronomical data for mariners. This paperback edition measures 16 x 24 cm, weighs 1 kg, and spans 496 pages. It includes daily ephemerides for the sun, moon, planets, and stars, along with permanent data sections for interpolation, coordinate transformation, and navigation corrections. Published in French, it is authored by the Bureau des Longitudes and is an indispensable resource for professional and recreational sailors alike.

With a reputation for precision and reliability, the publisher behind this nautical almanac has been a trusted name in maritime navigation for years. Specializing in high-quality reference materials for sailors, their publications are designed to meet the rigorous demands of life at sea. Each edition is meticulously crafted to ensure accuracy, making their almanacs a staple for professional mariners and adventurous sailors worldwide.

• Stay ahead of the curve with the latest astronomical data for 2026, ensuring your navigation is as accurate as possible.
• This almanac is your failsafe for GPS-independent navigation, providing peace of mind in remote or challenging conditions.
• Its comprehensive content covers everything from daily ephemerides to permanent reference tables, making it a complete, standalone resource.
• Lightweight and durable, it’s designed to withstand the harshest marine environments.
• Whether you're a professional mariner or a long-distance sailor, this book is your key to safe, autonomous navigation.