Lunar eclipse of August 28, 2026: exact time, where to see it in Spain and why the Moon will turn red

To organize public astronomical observation activities in Spain (meetups with telescopes, open days, "star parties," etc.) there is no specific unified state regime, but rather a set of procedures that depend on the location, capacity, and type of space (urban, rural, or protected). In practice, the city council, the autonomous community (if there is a protected area), and, in certain cases, sectoral regulations (aeronautics, safety, accessibility, public shows) are usually involved.

1. Municipal permits: public roads, parks, and shows

If the activity takes place in an urban environment (square, street, municipal park, fairground, cultural center courtyard, etc.), the main interlocutor is the city council. The most common are:

• Authorization for occupation of public roads or a municipal space: requested from the urban planning, mobility, environment, or culture department, depending on the case. Usually requires a descriptive report (date, schedule, estimated number of attendees, infrastructure to be installed, need to close traffic, etc.) and a location map.
• Authorization as a public show or recreational activity: if there is an open call to the public, possible gathering of people, and especially if sound equipment, bars, stages are used, or an entrance fee is charged, the autonomous community regulations on public shows and recreational activities may apply. In these cases, sometimes the following are required:
  • Prior communication or specific license for the event.
  • Basic safety and evacuation plan.
  • Compliance with capacity limits and emergency exits if a closed venue is used.
• Noise and schedule conditions: although the observation is silent, there may be time limits in parks or public spaces and coexistence requirements with neighbors.

2. Activities on rural land, forests, or protected spaces

For observations in rural areas, viewpoints, public utility forests, or protected natural spaces (national parks, natural parks, LIC/ZEC, ZEPA, Natura 2000 Network, etc.) it is common that authorization from the autonomous community or the managing body is required:

• Authorization for special use or organized activity: many environmental regulations distinguish between free individual access and organized group activities, which must be communicated or expressly authorized. The following may be required:
  • Basic environmental report (number of attendees, vehicles, planned lighting, measures to avoid disturbing wildlife, waste management).
  • Limitation of schedules, access points, and group size.
• Night access restrictions: some spaces have night circulation restrictions, so it is key to confirm this and request an exception if applicable.
• Coordination with owners or city councils: on private properties or rural tracks, permission from the owner or municipality may also be required.

3. Lights, lasers, and possible aeronautical effects

Although a basic observation activity hardly poses problems, there are two delicate issues:

• Use of astronomical laser pointers: their use is highly restricted near airports, airways, or areas with air traffic due to the risk of glare. If lasers of certain power are intended to be used, it is prudent to:
  • Check distances to airports and air routes.
  • Consult with the aeronautical authority or the city council itself, which can channel the inquiry.
• Installation of towers, tall structures, or powerful spotlights: if fixed elements of certain height or intense lighting are installed, aeronautical easements or local light pollution regulations may come into play; in such cases, additional authorization or design adaptation will be required.

4. Safety, accessibility, and insurance

Almost all municipalities and communities require minimums:

• Basic safety measures: marking cables, tripods, and obstacles; signaling lighting that does not ruin darkness; access control to avoid falls on slopes or dangerous areas; presence of responsible personnel.
• Accessibility: in public spaces, access for people with reduced mobility must be facilitated as much as possible, and accessible routes to the observation area must be planned.
• Civil liability insurance: for open activities with certain capacity, especially if organized by associations or companies, civil liability insurance covering personal and material damages to third parties is usually required.

5. Practical differences between urban and rural land

In summary, in urban land the key is municipal authorization (space occupation, shows, schedules, safety, and coexistence). In rural land or forest, the focus shifts to:

• Authorization from the land manager (city council, autonomous community, private owner).
• Compliance with environmental and night access limitations.
• Management of light impact and vehicle traffic.

In all cases, it is advisable to start contacts with the city council and, if applicable, with the managing body of the natural space several weeks in advance, providing a clear report of the activity and adapting the event design to the conditions they establish.

The National Geographic Institute (IGN), dependent on the Ministry of Transport and Sustainable Mobility, is the State's reference body in basic observational astronomy applied to Spanish territory. According to official notes from the Ministry itself, the IGN is assigned the competencies to provide official information on astronomy through the National Astronomical Observatory (OAN), and manages a network of observatories such as Yebes, which has become the official center for monitoring phenomena like the total solar eclipse of 2026.

1. Official astronomical information and phenomenon calculations

Various Ministry of Transport documents indicate that the IGN, through the OAN, is responsible for preparing and disseminating the official astronomical calculations for Spain. This includes:

• Calculation of solar and lunar eclipses visible from Spain, with data for more than 8,000 municipalities (path, start and end time, duration, totality band, degree of obscuration, etc.).
• Astronomical ephemerides linked to the civil calendar, such as the exact time of solstices and equinoxes; for example, the note on the start of summer 2026 explicitly states that the time is obtained “according to the calculations of the National Astronomical Observatory, dependent on the National Geographic Institute.”
• Other celestial phenomena of public interest (possibility of observing planetary alignments, visibility of the full moon, etc.), as reported in divulgative articles based on information from the IGN and OAN.

These calculations form the basis of the reference astronomical calendar for administrations, media, and the public.

2. Observatories and monitoring centers

The IGN manages a network of astronomical observatories, among which stand out:

• The Yebes Observatory (Guadalajara), described in government documents as the largest IGN center. The Government has designated it as the official headquarters for monitoring the total solar eclipse of August 2026, from where video signals are broadcast to RTVE and other media.
• The Royal Astronomical Observatory of Madrid, which is also used as an institutional and divulgative venue in events related to astronomical phenomena (for example, the presentation of a stamp dedicated to the eclipse).

Through these centers, the IGN carries out scientific observation of the Sun and other celestial bodies, providing data that become public services and products (viewers, maps, ephemerides).

3. Public services: maps, viewers, and applications

In collaboration with its autonomous body, the National Geographic Information Center (CNIG), the IGN develops specific tools for astronomical phenomena:

• Official eclipse web pages, with detailed information on the eclipses of 2026, 2027, and 2028, based on OAN calculations for thousands of municipalities.
• Interactive cartographic viewers that allow consulting, for any point in Spain, the visibility of the phenomenon, degree of partiality or totality, precise schedule, and horizon observation conditions.
• The mobile application “IGN Eclipses”, which offers access to these viewers and data from mobile devices.
• Official visibility maps, cited by media such as Demócrata, used as a reference to know “where the eclipse will be best seen” in Spain.

4. Outreach and observation safety

Official notes from the Ministry of Transport emphasize that the IGN develops an “intense scientific dissemination campaign” around the so-called 2026–2028 Eclipse Trio. In this area, its competencies are focused on:

• Preparing and disseminating educational material about eclipses and other astronomical phenomena (web portals, downloadable books, infographics).
• Issuing recommendations for safe solar observation, including warnings about the use of certified glasses and the risks of homemade methods, repeatedly cited in institutional communication.
• Offering official broadcasts in Spanish of major astronomical events (for example, the live signal of the eclipse from Yebes integrated into the IGN website and YouTube channel).

Although the operational management of emergencies and civil protection for large gatherings corresponds to the Interior Ministry and other bodies, the reference astronomical information and safe observation guides come from the IGN.

5. Role within the institutional system

In summary, regarding astronomical phenomena, the IGN is the state body responsible for:

• Producing and certifying official astronomical information for Spain.
• Operating observatories and observation networks that serve as the basis for that information.
• Providing geospatial and cartographic tools that allow administrations and the public to plan the observation of phenomena.
• Promoting scientific outreach and observation safety, especially in socially impactful events such as eclipses.

Other bodies (Civil Protection, security forces, sectoral ministries) rely on these official IGN data to design their own security, mobility, or public health devices when astronomical phenomena have massive repercussions.

In Spain, the protection of astronomical observation spaces against light pollution is structured through a core of state regulations on air quality and outdoor lighting and, very importantly, through specific autonomous community laws on light pollution and lighting regulation. Additionally, the Canary Islands case constitutes a unique "sky law" regime applicable to the observatories of the Institute of Astrophysics of the Canary Islands (IAC).

Basic state framework

At the state level, Law 34/2007, on air quality and atmospheric protection defines in its concept article light pollution as the nocturnal luminous glow produced by outdoor lighting that alters the natural night conditions and hinders astronomical observations of celestial objects. The law obliged administrations to prevent and reduce this pollution, with explicit objectives to:

• Promote efficient use of outdoor lighting.
• Preserve the natural conditions of nighttime hours.
• Prevent and correct effects on the night sky and, in particular, around astronomical observatories.

The additional provision on light pollution has been repealed by Law 9/2025 on Sustainable Mobility, but these guidelines have served as the basis for autonomous community regulation, which today concentrates most operational requirements.

Complementarily, Royal Decree 1890/2008 approves the Regulation on energy efficiency in outdoor lighting installations. Although its main focus is energy saving, it recognizes that irrational energy use and light pollution have environmental impact and sets general technical criteria for the design and management of outdoor lighting installations throughout the territory.

Specific regime for the Canary Islands Observatories

The most developed case is that of the IAC observatories in La Palma and Tenerife, regulated by:

• Law 31/1988, on the protection of the astronomical quality of the IAC observatories (not reproduced here, but it is the reference law).
• Royal Decree 243/1992, which approves the Regulation of Law 31/1988, and its amendment by Royal Decree 580/2017.

This regulation establishes a true "sky protection area":

• Territorial scope: the entire island of La Palma and, for certain factors (e.g., radioelectric), also Tenerife, with minimum distances from the observatories and restrictions on polluting industries above 1,500 m altitude.
• Outdoor lighting: luminaires that project all light below the horizontal plane, without inclination, with an obligation to reduce luminous flux after midnight.
• Types of lamps: preference for low-pressure sodium for street lighting; prohibition of mercury vapor lamps and similar, and control of new technologies so they do not worsen astronomical quality.
• Schedules: ornamental and sports lighting must be turned off after midnight, with only singular authorized exceptions.
• Advertising and spotlights: prohibition of projectors or lasers for advertising, recreational, or cultural purposes, as well as luminous signs that remain on after midnight.
• Technical control: luminaires subject to prior certification by the Technical Office for the Protection of the Sky Quality of the IAC, and outdoor lighting projects subject to mandatory report from the Institute.

Autonomous community laws on light pollution and zoning

Several communities have developed specific laws that, although generally framed, contain clear provisions for areas with astronomical value:

• Catalonia – Law 6/2001, on environmental regulation of lighting for the protection of the nocturnal environment, deployed by Decree 190/2015:
  • Defines installed upper hemisphere flux and prohibits luminaires emitting more than 50% above the horizontal plane.
  • Establishes zoning (E1–E4), where zone E1 includes areas of special astronomical value, where only minimal brightness is allowed and schedules and lighting levels are strongly limited.
  • Prohibits projectors and aerial advertising devices at night and sets strict restrictions on sports spotlights, beaches, etc.
• Castile and León – Law 15/2010, on prevention of light pollution:
  • Classifies the territory into zones E1–E4; zone E1 includes internationally categorized astronomical observatories, national parks, and especially vulnerable areas, where only reduced brightness is allowed.
  • Provides for regulatory limits on hemispheric flux and schedules, and the possibility of raising protection levels through municipal ordinances.
• Andalusia – Law 7/2007, on Integrated Environmental Quality Management:
  • Introduces, for the first time in the community, its own light pollution regime, with zoning (including dark areas of special astronomical interest) and definition of installed upper hemisphere flux.
  • Establishes limitations on lighting of beaches and coasts, luminous advertising, and illuminated flying devices at night.
• Galicia – Law 8/2002, on atmospheric environment protection, and Valencian Community – Law 6/2022, on climate change:

In Galicia, the atmospheric environment law does not contain a detailed lighting regime but serves as a basis for sectoral plans to limit lighting in natural spaces. In the Valencian Community, Law 6/2022 requires public lighting to be adapted to minimize light pollution and respect specific regulations for nocturnal environment protection, allowing particular requirements in areas of astronomical interest through planning and ordinances.

Protection figures linked to astronomical observation

Starlight reserves and other similar certifications are usually based on these legal foundations (autonomous community laws, natural space plans, lighting regulations, and, in the Canary Islands, Law 31/1988), but do not constitute, in themselves, a specific state legal figure. Their effective protection rests on:

• Light zoning (E1, dark areas, zones of special astronomical value).
• Technical requirements on orientation, shielding, and spectrum of luminaires, limits on upper hemisphere flux, and schedules for turning off or reducing lighting.
• Prohibitions or severe restrictions on luminous advertising, lasers, and sports spotlights at night.
• Authorization procedures and mandatory reports around observatories and protected natural spaces.