What time does the sun rise? Your complete guide to astronomical phenomena and data for sky observation

For those who want to know what time the sun rises in their region and make the most of observing natural phenomena, planning ahead is essential. From everyday activities like hiking and fishing to agricultural projects, knowing the exact time the sun rises helps optimize each day. This knowledge goes beyond practicality: it offers a unique opportunity to appreciate one of nature’s most sublime spectacles in its fullest expression.

The exact moment of sunrise and the start of the day

The answer to “what time does the sun rise?” largely depends on your location. According to data from the Naval Hydrographic Service (SHN), in cities like Buenos Aires, the process begins with the morning twilight at 6:00 a.m. This is the period when the atmosphere gradually brightens, with the Sun still below the horizon but its rays dispersing across the sky.

The true sunrise— the moment when the sun actually rises in technical terms— occurs around 6:28 a.m. At that precise moment, the upper edge of the Sun peeks over the horizon, marking the definitive transition from night to full daylight. This phenomenon is not just visual; it represents a fundamental change in terrestrial lighting conditions.

Geographic and seasonal factors that determine when the sun rises

Variations in what time the sun rises at different times of the year are based on specific astronomical principles. Latitude plays a key role: near the Equator, variations are minimal throughout the year, remaining almost constant. However, at intermediate latitudes like Argentina, differences can reach up to two hours between the extreme solstices.

The Earth’s axial tilt is responsible for these fluctuations. During the southern hemisphere summer, sunrise occurs earlier; during winter, it is significantly delayed. This natural cycle has allowed entire civilizations to organize their activities according to the Sun’s rhythms.

Temperature data and sunset times

Complementing the information about what time the sun rises, it’s equally important to know when the peak heat occurs and when the day ends. According to the National Meteorological Service (SMN), the maximum temperature of the day will be reached in the early afternoon, around 27°C. Specialized platforms like Windy specify this even more precisely, indicating 3:00 p.m. as the time of highest thermal intensity.

The sunset marks the end of the day. SHN reports that this event will occur approximately at 7:58 p.m., when the upper edge of the Sun disappears below the horizon. Later, between 8:00 and 8:25 p.m., the evening twilight unfolds— that magical period when residual light creates reddish hues in the sky before darkness fully sets in.

The 2026 eclipses: essential astronomical events

The year 2026 promises exceptional celestial spectacles. According to SHN reports, there will be two solar eclipses and two lunar eclipses with distinctive features:

Annular Solar Eclipse (February 17): The Moon positions itself between the Sun and Earth but at a distance that prevents full coverage, leaving a bright “ring of fire” visible. It will be partially visible from southern Argentina, though the complete annular phase will only be seen in Antarctica.

Total Lunar Eclipse (March 3): Earth perfectly aligns between the two, casting its shadow on the Moon. This phenomenon takes on reddish tones (the famous “Blood Moon”) due to atmospheric refraction. It will be observable across all of America, including Argentina.

Total Solar Eclipse (August 12): The perfect alignment of the three celestial bodies causes daytime darkness. In the totality band, the solar corona will shine brightly. It will be visible in Greenland, Iceland, and Spain, with a partial phase in other regions.

Partial Lunar Eclipse (August 28): Only part of the lunar disk enters Earth’s shadow, creating a partial illumination effect visible across all of America.

Meteor shower events in 2026: when to watch

NASA has compiled the calendar of notable meteor showers for 2026:

• Quadrantids: Late December to early January
• Lyrids: Last weeks of April
• Eta Aquarids: Late April to early May
• Delta Aquarids (Southern): Late July to early August
• Perseids: Late July to early August
• Orionids: Early October to mid-November
• Leonids: Early November to early December
• Geminids: Throughout December

Each shower offers an opportunity to connect with cosmic cycles. With this information about what time the sun rises, when the maximum heat occurs, and which astronomical phenomena will happen, you can maximize your enjoyment of the night sky and make the most of each day.