FTP, name this 1901 play about Olga, Masha, and Irina, a work by Anton Chekhov.
The play opens at noon on the fifth of May, which is the name-day of one of the title characters and also the first anniversary of the death of one of their relatives.   The second act opens at eight that evening, when one of the characters worries about the health of little Bobik.  Act 3 begins in the middle of the night, when the old nurse Anfisa and one of the title characters pick out clothes to give people whose homes have burnt down.  Other characters include Baron Nicholas Tuzenbakh, who dies in a duel, and Natasha, the wife of Andrew Prozorov.  FTP, name this 1901 play about Olga, Masha, and Irina, a work by Anton Chekhov.
The play opens at noon on the fifth of May, which is the name-day of one of the title characters and also the first anniversary of the death of one of their relatives.   
The Three Sisters (or: Tri sestry)