Sky Tonight
ST
Location settings
Santa Clara, US
37.4°/-122°
GMT -9
Waning17:48 - 04:07
⌕
Go to My SkyLog in
☾
☰
Sky-Tonight.com / Solar System / Sun
  • 🌐 EN
    ENDEESFRPT中文
  • Tonight
    • Brightest Planets and Stars Tonight
    • Milky Way Tonight
  • Solar System
    • Sun
    • Real-Time Sun Map
    • Sunspots Activity
    • Aurora Activity
    • Moon
    • Interactive Lunar Map
    • Planets
    • Mercury
    • Venus
    • Mars
    • Jupiter
    • Saturn
    • Satellite Flyovers
    • ISS
    • Close Approaches
  • Small Bodies
    • Asteroids
    • Comets
    • Recently Updated Comets
  • Stars
    • Brightest Stars
  • Meteor Showers
    • Active Meteor Showers
    • Major Meteor Showers
  • Solar Eclipses
    • Future Solar Eclipses
    • Past Solar Eclipses
  • Lunar Eclipses
    • Future Lunar Eclipses
    • Past Lunar Eclipses
  • Deep Sky Objects
    • Seasonal Nebulae
    • Messier Objects
    • Nebulae
    • Star Clusters
    • Galaxies
  • Double Stars
    • Naked-eye
    • Binocular
    • Physical pairs
    • Color-contrasting
    • Triple systems
    • Multiple systems
  • Constellations
    • Visible Tonight
    • Seasonal
    • Ecliptic
    • All 88 Constellations
  • Maps
    • Mars Map
    • Mercury Map
    • Earth
    • Cloud Cover Map
  • Contact Us
    • Feedback

Observation Settings

Or select it on the map:
This Earth map lets you select the observer’s location used to calculate the bearing and elevation of celestial objects. The selected point determines how the sky, rise and set times, and object positions are shown.
Your location: Santa Clara, United States
Timezone:
Latitude:
37.3541
Longitude:
-121.955

Sun Today — Position, Rise and Set

Sun Events Timetable

Sunset/Sunrise16:5005:04
Civil Twilight17:1804:37
Nautical Twilight17:4804:07
Astronomical Night18:1803:36
Elevation at transit50°
Transit time10:57
Distance to Earth1.0014 AU (149,807,308 km)

Sun

Last update: 30 September 2026 at 15:00

Current Sunspot and Flare Activity

The Sun currently displays 148 active sunspot regions visible from Earth, varying in size and magnetic complexity. This includes 2 newly detected regions (4544, 4544) in the past 24 hours.
The largest sunspot is AR 4527, classified as Hsx, covering 210 millionths of the solar hemisphere (MSH), and containing 2 individual spots.
No significant flares detected today. Data current as of 29 June 2026 at 05:01.

Recent Sunspots

4544

Sunspot region

Spot count:
2
Area:
40
Coordinates:
S09W15
Class:
Cso
Magnetic class:
B
AR 4544 is a Cso-class group first observed on 29 September 2026. It covers 40 MSH and contains 2 individual spots.
View detailed sunspot data

4544

Sunspot region

Spot count:
3
Area:
30
Coordinates:
S09W29
Class:
Dro
Magnetic class:
B
AR 4544 is a Dro-class group first observed on 29 September 2026. It covers 30 MSH and contains 3 individual spots.
View detailed sunspot data

View detailed sunspot data

Real-Time Solar Imaging

The data used in these images are provided by the Solar Dynamics Observatory (SDO), a NASA mission that studies solar variability and its effects on Earth. Its AIA and HMI instruments provide high-resolution, real-time images in multiple wavelengths for studying solar activity and space weather. We thank the SDO team and NASA for making these data publicly available.

Magnetogram

HMI magnetograms show the strength and direction of the magnetic field on the solar surface. Images from the HMI instrument aboard the Solar Dynamics Observatory (SDO) reveal complex magnetic structures, sunspots and active regions.

Intensitygram

HMI intensitygrams show the solar surface in visible light, highlighting sunspots, granulation and solar faculae. They provide a detailed view of the photosphere and make it possible to follow sunspot development and movement.

Solar Magnetism: Coronal Loop Dynamics

These 171 Å images highlight the solar corona and upper transition region. AIA images from the Solar Dynamics Observatory (SDO) reveal the outer atmosphere and its magnetic field lines, especially the million-degree plasma loops above the solar surface.

Active Regions, Flares and Coronal Holes

AIA 193 Å images show the hot corona, active regions, solar flares and coronal holes. This wavelength is especially useful for observing high-temperature plasma and regions where the solar wind escapes into space.

Solar Passage Through the Day

Double-click to unlock the map.

Current Sun position

Time15:39
Latitude37.3541
Longitude-121.955
Elevation13°
Azimuth255°

Yearly Sunlight Dynamics

Time

Sun Properties

Date1 October 2026
Twilight start17:48
Twilight end04:07
Astronomical observing duration10h 19m
Elevation at transit50°
Transit time10:57
Distance to Earth1.0014 AU (149,807,308 km)
Equatorial coordinates at midnightRA: 12h 29m 13s", Dec: -3° 09' 17s
ConstellationVirgo

Last and Upcoming Solar Eclipse

12 August 2026

Total Solar Eclipse

Global
100%
Local
-
Total Solar Eclipse 2026-08-12
GlobalFrom your location
Penumbra06:36-10:58Not visible
Umbra07:59-09:36Not visible
See details

6 February 2027

Annular Solar Eclipse

Global
86%
Local
-
Annular Solar Eclipse 2027-02-06
GlobalFrom your location
Penumbra03:59-10:02Not visible
Antumbra05:05-08:57Not visible
See details

Last and Upcoming Lunar Eclipse

28 August 2026

Partial Lunar Eclipse

Global
96.9%
Local
96.9%
Partial Lunar Eclipse 2026-08-28
GlobalFrom your location
Penumbral16:26-22:0217:35-22:02
Partial17:35-20:5417:35-20:53
Total--

20 February 2027

Penumbral Lunar Eclipse

Global
96.4%
Local
-
Penumbral Lunar Eclipse 2027-02-20
GlobalFrom your location
Penumbral12:14-16:14Not visible
Partial-Not visible
Total-Not visible

Aurora Activity

Current Aurora Activity

North

South

Kp index: . Very quiet geomagnetic activity
Aurora probability at your location: 0%
View aurora details

Astrometric and Physical Parameters of Sun

Coordinates and Visibility

Right Ascension12h 29m 13s
Declination-3° 09′ 17″
Magnitude-26.7
ConstellationVirgo
Elevation13.5°
Azimuth255.3°

Basic Properties

Mass, kg1.98841E+30
Mean density, g/cm³1.408

Rotation

Sidereal rotation period, days25.38

Surface and Atmosphere

Surface gravity, m/s²274.0 m/s^2
Escape velocity, km/s617.7
Mean temperature, K5772

Data Acknowledgment

Solar-system physical and orbital parameters are provided by the Solar System OpenData API maintained by Le Système Solaire. We thank its contributors for making these open data available.

More about Sun

  • Where is Sun right now?
  • When Is the Next Solar Eclipse?
  • When Is the Next Lunar Eclipse?