Passaggio all'ora solare 25 ottobre 2020 03:0002:00 sposta indietro l'orologio di 1 ora (si dorme 1 ora in più)
Una esempio in C# per leggere, ricorsivamente, i siti di SharePoint OnLine:
//https://www.sgart.it
using Microsoft.SharePoint.Client;

static void Main(string[] args)
{
	string userName = "xxx@xxx.onmicrosoft.com";
	string password = "???";

	var webs = LoadWebsTree("https://sgart.sharepoint.local", userName, password);
	foreach (var w in webs)
	{
		Console.WriteLine(w.Key + " | " + w.Value);
	}
	Console.ReadLine();
}

private static Dictionary<string, string> LoadWebsTree(string webUrl, string userName, string password)
{
	Dictionary<string, string> result = new Dictionary<string, string>();

	using (ClientContext ctx = GetContext(webUrl, userName, password))
	{
		// cari co i dati del sito root
		Web web = ctx.Web;
		ctx.Load(web, w => w.Title, w => w.Url);
		ctx.ExecuteQuery();
		result.Add(web.Url, web.Title);

		// leggo i sottositi
		LoadSubWebs(ctx, web, result);
	}
	return result;
}

private static void LoadSubWebs(ClientContext ctx, Web parentWeb, Dictionary<string, string> result)
{
	// carico i dati dei sottositi
	ctx.Load(parentWeb, w => w.Webs, w => w.Title, w => w.Url);
	ctx.ExecuteQuery();

	foreach (Web web in parentWeb.Webs)
	{
		result.Add(web.Url, web.Title);
		// leggo i sottositi
		LoadSubWebs(ctx, web, result);
	}
}

private static ClientContext GetContext(string webUrl, string userName, string password)
{
	SecureString securePassword = new SecureString();
	foreach (char c in password.ToCharArray())
	{
		securePassword.AppendChar(c);
	}
	ClientContext ctx = new ClientContext(webUrl);
	ctx.AuthenticationMode = ClientAuthenticationMode.Default;
	ctx.Credentials = new SharePointOnlineCredentials(userName, securePassword);
	return ctx;
}