Sky Tonight
ST
Location settings
Santa Clara, US
37.4°/-122°
GMT -9
Waxing18:57 - 03:26
  ⌕
☾
☰
Sky-Tonight.com / Sun / Real-Time Interactive Sun Map
  • 🌐 EN
    ENDEES中文
  • Tonight
    • Brightest Planets and Stars 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
    • Sky Map
    • 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

Real-Time Interactive Sun Map

Double-click to unlock the map
Selected map type: AIA 193 Å

Explore the solar disk in visible light, ultraviolet and magnetic-field views. Switch between wavelengths to follow active regions, coronal structure and sunspot positions.

The map and active-region list are updated from current solar-observatory data.

Last update: 17 August 2026 at 04:52

Active Sunspots

These are the active sunspot regions currently visible on the solar disk. Each card includes its NOAA number, magnetic class, area, spot count and flare probabilities.

4501

Sunspot region

Spot count:
3
Area:
40
Coordinates:
S07W68
Class:
Cso
Magnetic class:
B
AR 4501 is a Cso-class group first observed on 29 July 2026. It covers 40 MSH and contains 3 individual spots.
View detailed sunspot data

4499

Sunspot region

Spot count:
6
Area:
30
Coordinates:
N04W65
Class:
Dai
Magnetic class:
B
AR 4499 is a Dai-class group first observed on 27 July 2026. It covers 30 MSH and contains 6 individual spots.
View detailed sunspot data

4502

Sunspot region

Spot count:
6
Area:
60
Coordinates:
S07W24
Class:
Dao
Magnetic class:
B
AR 4502 is a Dao-class group first observed on 1 August 2026. It covers 60 MSH and contains 6 individual spots.
View detailed sunspot data

4498

Sunspot region

Spot count:
6
Area:
80
Coordinates:
N14W30
Class:
Dso
Magnetic class:
B
AR 4498 is a Dso-class group first observed on 27 July 2026. It covers 80 MSH and contains 6 individual spots.
View detailed sunspot data

4500

Sunspot region

Spot count:
1
Area:
10
Coordinates:
N18W27
Class:
Cro
Magnetic class:
B
AR 4500 is a Cro-class group first observed on 28 July 2026. It covers 10 MSH and contains 1 spot.
View detailed sunspot data

Acknowledgments

We thank the teams behind the Solar Dynamics Observatory (SDO), including the HMI, AIA and EVE teams, for continuous solar monitoring.

We also thank National Aeronautics and Space Administration (NASA), the Goddard Space Flight Center (GSFC), and the National Oceanic and Atmospheric Administration (NOAA) for supporting solar science and public data access.

Additional event data are provided by NASA’s DONKI (Database of Notifications, Knowledge, Information), with records of flares, CMEs and geomagnetic storms.