The Supreme Court has ruled that the Welsh Government's first law was within the Welsh Assembly's legislative competence, and can go ahead.
The outcome is entirely consistent with the general thrust of the extended powers given to the Welsh ministers, by the Government of Wales Act 2006.
The Local Government Byelaws Bill was passed by the assembly in July this year. But it was blocked from becoming law by the attorney general and referred to the court.
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Most places will see a dry, bright day with patchy cloud but also some warm sunny spells, and it'll be less breezy than on Friday.
Members of the RMT union are walking out for three days from today in a row over new trains causing disruption to bank holiday services.
The Bank Holiday is here! Which is usually a recipe for wet weather! Yes, we will get our fair share. But it's not all doom and gloom!