About Solunak

What Solunak is

Solunak is an independent moon phase calendar published in Spanish, French, Portuguese, English and Dutch. The site is a small reference utility focused on a single thing: showing when the four major moon phases happen, in a form that is easy to read in your local calendar.

Solunak has no user accounts, no comments, no forms and no paid features. It is a free public reading site that may carry display advertising.

What the calendars show

Each calendar page presents the four major moon phase events:

• New Moon — the start of the lunar cycle, when the Moon is between the Sun and the Earth.
• First Quarter — half of the visible disk is lit, midway from New to Full.
• Full Moon — the entire visible disk is lit.
• Last Quarter — half of the visible disk is lit, midway from Full back to New.

Solunak presents these events in three views:

• Today — the current phase and how much of the Moon is lit, a chart of where the Moon is in your sky (its height and which way to look) around its next rise and set, the Moon’s age in the cycle and the next major phases.
• Monthly calendar — a portrait of the Moon for every day, the exact times of the main phases, and a guide to the Full Moon night with a chart of the Moon’s path across the sky.
• Yearly calendar — twelve months at a glance, with the one pattern worth knowing about the year, such as a month with two Full Moons or how many Full Moons are left.

How dates and times are calculated

A moon phase is a single global event — for example, a Full Moon happens at one specific moment in time worldwide. Calendars, however, are read locally. Solunak handles this in a simple, deterministic way:

• Each phase event is stored as a UTC moment (an exact astronomical instant).
• For every page, the UTC moment is converted to the timezone of the city you choose. Each language starts with a default city (for example, Madrid for Spanish or Paris for French), and you can pick any of more than 400 places.
• The local date and time shown on the page are derived from that stored UTC source and displayed in the reference timezone of the page.

This means a Full Moon may appear on different local calendar days in different locales — that is the expected behavior, not a discrepancy. Choose a city to read the dates, times and observation guidance in its timezone. Your choice stays with you across languages and calendars; the astronomical event itself is the same everywhere.

The monthly calendar offers a portrait for every day, sampled at local noon, and a simpler view of the four main phases. The times beside main phases mark their exact astronomical moments.

Moonrise and moonset times are calculated for the chosen city. The sky charts are a reading aid: the Moon’s height is approximate (marked ≈), calculated every 15 minutes with atmospheric refraction but without every small correction for your exact position on Earth. The highest point on a chart is the highest of those samples, not an exact transit time. Trees, buildings and weather are not taken into account.

About the Moon portraits

When a matching frame is available, portraits come from NASA’s Scientific Visualization Studio. Other dates use our Moon Lab renderer, with a NASA/LRO lunar surface texture and calculated illumination, libration and axis orientation. The enlarged portrait identifies its source and time.

Celestial north is at the top. This makes changes easy to compare from day to day; the Moon’s tilt above your own horizon can be different. Images are sampled on the hour, while the phase times in the calendar retain their exact minute.

What Solunak does not do

To keep the project focused and trustworthy, Solunak deliberately stays out of several areas:

• No astrology, horoscopes or zodiac interpretation.
• No medical, beauty, hair or wellness advice tied to lunar phases.
• No gardening, planting or biodynamic recommendations.
• No predictions, forecasts or claims about the influence of the Moon on human behavior, health or events.

If you are looking for any of the above, Solunak is not the right resource. The site reports lunar dates and times and stops there.

Languages and scope

The calendars are published in five languages: Spanish (/es/), French (/fr/), Portuguese (/pt/), English (/en/) and Dutch (/nl/). The Portuguese version is intended to serve both Brazilian and Portuguese readers, and the Dutch version both the Netherlands and Flanders; the English version is a global English locale rather than a country-specific edition.

The calendars cover the current year and the next two years. Older English yearly pages remain available as historical reference for readers arriving from an earlier site.

Who publishes Solunak

Solunak is published independently under the Solunak brand. It is run as a small, single-purpose project, not on behalf of a company or organization. The publisher acts as data controller for the limited personal data described in the privacy policy.

For questions about the site, the data, corrections or partnerships, contact hello@solunak.com.