gotcha day n. the day or anniversary of the arrival of an adopted child (or pet) into the care of an adopting family; less commonly, the day or anniversary of their first meeting or of the adoption becoming official. (source: Double-Tongued Dictionary)
Further reading
Some people work hard to lose their accent in order to fit in. Others may be homesick for the voices they grew up with and try to reclaim them. How can you regain your old accent? Also, a compelling book about scientific taxonomy shows how humans...
Some college students are using the word loyalty as a synonym for monogamy. Are the meanings of these words now shifting? Plus, a biologist discovers a new species of bat, then names it after a poet he admires. Also, warm memories of how a childhood...