ok, the simplest way to do this would be to go into settings.py and uncommnent and modify the bit of code about

CONFIG_LOADER_CLASS

. It should look something like this:

# Class that manages how configuration is loaded.
from kedro.config import TemplatedConfigLoader
CONFIG_LOADER_CLASS = TemplatedConfigLoader
# Keyword arguments to pass to the `CONFIG_LOADER_CLASS` constructor.
CONFIG_LOADER_ARGS = {
     "globals_dict": {"date": get_date_in_yyyymm_format()},
}

and then you can use

date

as a variable in your catalog.yml file.