How to create a file from bat with current date?

Question

cmd/bat

Tried like this: echo . > "C:\Folder Name\log%DATATIME%.txt"
and like this:

echo . > "C:\Folder Name\log" + %DATATIME% + ".txt"

so : echo . > "C:\Folder Name\log"%DATATIME%".txt"

Answer 1

%DATE%

Answer 2

echo . > "C:\FolderName\log-%date:~6,4%-%date:~3,2%-%date:~0,2%.txt"