changing of guard

For clarity Care to rephrase your question?

I’m also thinking by reading your two other posts you haven’t invested in the RS London guidebook.

You should.

Loads of pertinent, practical and useful information for first time London visitors.

Happy to answer questions here but you’ll find the guidebook an easy read and helpful resource as you plan your September trip.

Here's the link to the official schedule from the Household Cavalry for the guard change for both Buckingham Palace and Windsor.

https://www.householddivision.org.uk/index.php?action=changing-the-guard-calendar

(I think there is a typo and "days" should be "says" which I think might be referring to perhaps the RS guide book?)

editing to add: I see I gave the same link in your other thread on St James Palace guard change. If you've lost track of your posts, after you sign in you can click on the "My Account" link in the upper right. You can see your recent few posts there under My history or click View All to see everything. Also, as a group, this forum works a bit better if you're able to give feed back on advice.