Hello @elena2 and welcome to Elfsight Community 
Unfortunately, at the moment, there is no option to display the year in our Event Calendar widget. I am deeply sorry 
We totally understand why you’d want that and agree that this feature could be a great addition to our product.
We already have such a request on our Wishlist. Please vote for this feature to get a notification upon its release here - Display also the year.
Please do not hesitate to share your ideas or any insights you have as it helps us improve our apps 