Introduction
Sunspot Activity Notes
Solar Observing CD-ROM
Sunspot Development
Disk Animations
Disk Drawings
Eclipses of the Sun
Glossary
Hydrogen Alpha
Latest Disk Animation
Latest Disk Drawing
Sunspot Measurements
Observing the Sun
Parallactic Angle
Software
Solar Books
Stonyhurst Disks
The Sun as viewed from the Earth
Sunspot Area
Sunspot Location
Sunspot Numbers
Sunspot Trends
Transits
Useful Links
What's New

Sunspot numbers derived from individual drawings are shown below in the form of a colour table from blue through to red via green and yellow. A sunspot number of 0 is , a sunspot number of 50 is , a sunspot number of 100 is , a sunspot number of 150 is while a sunspot number of 200 or more is . The numbers are given for each solar rotation so that active longitudes can be identified. Dates can be seen by placing the mouse icon over each coloured square.

Rotation

                                                

2025

 2nd January 2005 3rd January 2005         8th January 2005 9th January 2005     12th January 2005 13th January 2005 14th January 2005 15th January 2005 16th January 2005   18th January 2005     21st January 2005 22nd January 2005 23rd January 2005 24th January 2005   26th January 2005      

2026

 29th January 2005   31st January 2005             7th February 2005         12th February 2005     15th February 2005     18th February 2005 19th February 2005   21st February 2005        

2027

   26th February 2005 27th February 2005 28th February 2005     3rd March 2005   5th March 2005 6th March 2005       10th March 2005   12th March 2005 13th March 2005     16th March 2005 17th March 2005 18th March 2005 19th March 2005       23rd March 2005  

2028

 25th March 2005 26th March 2005   28th March 2005       1st April 2005 2nd April 2005 3rd April 2005   5th April 2005   7th April 2005   9th April 2005 10th April 2005 11th April 2005 12th April 2005       16th April 2005 17th April 2005        

2029

 22nd April 2005   24th April 2005   26th April 2005 27th April 2005   29th April 2005 30th April 2005 1st May 2005 2nd May 2005     5th May 2005 6th May 2005 7th May 2005 8th May 2005 9th May 2005 10th May 2005 11th May 2005 12th May 2005 13th May 2005   15th May 2005   17th May 2005    

2030

 18th May 2005   20th May 2005 21st May 2005 22nd May 2005 23rd May 2005 24th May 2005 25th May 2005 26th May 2005 27th May 2005     30th May 2005 31st May 2005       4th June 2005     7th June 2005 8th June 2005 9th June 2005 10th June 2005   12th June 2005 13th June 2005  

2031

 14th June 2005 15th June 2005 16th June 2005 17th June 2005 18th June 2005 19th June 2005   21st June 2005 22nd June 2005 23rd June 2005 24th June 2005   26th June 2005 27th June 2005 28th June 2005 29th June 2005   1st July 2005     4th July 2005 5th July 2005       9th July 2005 10th July 2005  

2032

 11th July 2005 12th July 2005 13th July 2005 14th July 2005 15th July 2005 16th July 2005 17th July 2005 18th July 2005 19th July 2005 20th July 2005 21st July 2005     24th July 2005       28th July 2005       1st August 2005   3rd August 2005   5th August 2005   7th August 2005

2033

 8th August 2005 9th August 2005 10th August 2005 11th August 2005   13th August 2005   15th August 2005 16th August 2005 17th August 2005   19th August 2005   21st August 2005   23rd August 2005   25th August 2005 26th August 2005   28th August 2005 29th August 2005 30th August 2005 31st August 2005 1st September 2005 2nd September 2005 3rd September 2005  

2034

 4th September 2005     7th September 2005 8th September 2005 9th September 2005 10th September 2005   12th September 2005 13th September 2005     16th September 2005 17th September 2005   19th September 2005     22nd September 2005 23rd September 2005                

2035

     3rd October 2005 4th October 2005       8th October 2005 9th October 2005 10th October 2005 11th October 2005       15th October 2005 16th October 2005       20th October 2005 21st October 2005   23rd October 2005   25th October 2005 26th October 2005 27th October 2005  

2036

 1st November 2005     4th November 2005 5th November 2005   7th November 2005   9th November 2005     12th November 2005 13th November 2005 14th November 2005 15th November 2005 16th November 2005 17th November 2005 18th November 2005 19th November 2005 20th November 2005   22nd November 2005            

2037

                   4th December 2005     7th December 2005 8th December 2005 9th December 2005 10th December 2005 11th December 2005 12th December 2005         17th December 2005 18th December 2005 19th December 2005      

2038

     24th December 2005 25th December 2005 26th December 2005 27th December 2005 28th December 2005               5th January 2006 6th January 2006         11th January 2006       15th January 2006      

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Last updated on 14 March 2006.