Mother's day is celebrated on May 10th in USA, India and Australia, on March 22nd in the UK and Ireland and on May 3rd in Spain. Here you can read three stories related to the topic.
The first story is Kate Middleton's virtual visit to a new mother in a hospital in South-West London, where she has a friendly conversation with the astonished new mother, who describes the experience as "surreal". Kate's goal was to raise awareness about the mental health issues that can affect new mothers. The story comes from "The Daily Mail", a royalist tabloid in the UK, and it is suitable for B2 students.
The second story comes from The New York Times, and it reports on how florists are preparing to deliver bouquets of flowers for Mother's Day in the USA during confinement. The language in the article is very descriptive -precise nouns and adjectives- which can be challenging, so the text is suitable for C1 students, but the pictures, of course, can be enjoyed by anyone.
Finally, the third story also comes from The Daily Mail, but from the Australia edition, in this case. The article explains how social distancing restrictions will affect the celebration of Mother's Day in the different states and territories in Australia. The text is not too difficult, it is full of passive voice verbs, but it can be read by B1 students with the help of a dictionary to look up words like "gatherings" (meetings), "to ease restrictions" (to reduce or to soften restrictions) or "hugs" (embraces).