Your personal observatory
A Moon calendar for your day
Explore the Moon’s phase and illumination, find upcoming events and plan a simple observation practice in your own time zone.
In English and Russian. Start with free access.
What you can explore
A lunar phase reaches its exact moment worldwide, but its calendar date depends on the time zone. Asteruna keeps astronomical data separate from symbolic suggestions. Follow the sky, choose a reflective practice and compare your observations across different dates.
Inside this section
- Lunar phase, illumination and upcoming new and full Moons.
- Date and time-zone controls that recalculate the calendar.
- Personal notes, lunar plans and period comparisons on the relevant plans.
How to get your result
- Choose a date and time zone. When travelling, check that you are using the zone of the place you want to plan for.
- Look at the phase and upcoming events. Read what each indicator means before choosing a practice.
- Pick a manageable action, save a plan or observation and return to it after the selected date.
How to read the result
Phase describes the relative positions of the Sun, Earth and Moon; illumination is the visible fraction of the lunar disc. Neither promises a particular mood or outcome. Actual skywatching also depends on weather, the horizon and your location. Symbolic practices offer a moment to pause and notice your own rhythm.
Try it for yourself
Compare neighbouring dates near a new Moon in different time zones. If the event moves to another day, check its time first: the calendar often explains the difference.
Continue exploring
Save your result to your account to keep its inputs and your notes. Explanation depth and additional tools depend on your plan; core calculations do not require AI.
Your next step
Make it personal
Open the tool, explore your result and keep an observation you can return to.
Start for free