National Sandra Day circulates through online holiday calendars and social posts under the hashtag #NationalSandraDay, and nothing ties it to a particular country. No founder, establishing act or first-observance record has been documented.
The novel that set it loose
George Meredith published Emilia in England in 1864 and gave the heroine the name Sandra. Twenty-three years later he brought the book back under her name, as Sandra Belloni.
English readers took the name and kept it. It stopped being a familiar form of Alexandra and started being something a child could simply be called.


