Jump to content

Spotless Days


Sun Burn

Recommended Posts

As of today  12/11/19, another website lists the number of consecutive spotless days as 28, with 268 spotless days in the year. Are there other entities - Gov & Scientific, that count spotless days another way? Why the discrepancy? Is there some debate on what a sunspot is?

Link to comment
Share on other sites

On Novembert 13th there was a new region number assigned to a very shirt lived spot. SWPC didn't count it as a sunspot that was visible at midnight local time. SILSO of the SIDC did count it as a day with a tiny speckle on the sun. The official numbers should be from SILSO as they are the official source of the sunspot number. Probably, because of the time difference between the recording of SILSO and SWPC, the tiny speckle wasn't visible anymore and thus by that instance not counted.

  • Thanks 1
Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you also agree to our Terms of Use and our Privacy Policy.