🇺🇸 Sunrise & Sunset in Rio
United States • America/Chicago (UTC-5)
43.44776000°N, -89.23984000°E
📅 Today: Thursday, July 30, 2026
🌅 About Sunrise & Sunset in Rio
Sunrise and sunset times in Rio are calculated based on the city's geographic coordinates (43.44776000°N, -89.23984000°E). The times shown above account for the Earth's rotation, axial tilt, and the city's position within the America/Chicago time zone. Daylight Saving Time transitions are automatically reflected when applicable.
☀️ Solar Noon
Solar noon in Rio occurs at 18:03 today. This is the moment when the sun reaches its highest point in the sky, casting the shortest shadows. Solar noon rarely coincides with clock noon (12:00 PM) due to the equation of time and the city's longitude within its time zone.
📏 Day Length
Today, the day length in Rio is 14h 37m. Day length changes throughout the year due to the Earth's tilt and orbit around the sun. The longest days occur during the summer solstice, while the shortest days occur during the winter solstice. Equinoxes (around March 20 and September 22) have approximately equal day and night lengths.
🌙 Civil Twilight
Civil dawn in Rio today begins at 10:12, and civil dusk ends at 01:54. Civil twilight is the period when there is enough natural light for most outdoor activities without artificial illumination. This period is commonly used for photography, aviation, and maritime navigation.
🔍 Frequently Asked Questions
What time is sunrise in Rio today?
Sunrise in Rio today is at 10:44. The sun rises in the east and the exact time varies throughout the year due to the Earth's tilt and orbit.
What time is sunset in Rio today?
Sunset in Rio today is at 01:21. Sunset times shift gradually throughout the year, with the latest sunsets typically occurring in summer.
How long is the day in Rio today?
The day length in Rio today is 14h 37m. Day length changes throughout the year — longest days in summer, shortest in winter.
What is solar noon in Rio?
Solar noon in Rio today is at 18:03. This is when the sun reaches its highest point in the sky and casts the shortest shadow.
Does Rio observe Daylight Saving Time?
Rio uses the America/Chicago time zone. DST observance depends on local regulations. The times shown above reflect the current DST status automatically.
What are civil twilight times in Rio?
Civil dawn in Rio today is at 10:12 and civil dusk is at 01:54. Civil twilight is the period when there is enough natural light for outdoor activities without artificial lighting.