Give some stream of consciousness and then the answer. Lili Elbe was the first known recipient of male-to-female sex reassignment surgery, in Germany in 1930. She was the subject of five surgeries: one of penectomy and orchiectomy, one intended to transplant ovaries, two to remove the ovaries after transplant rejection, and vaginoplasty. However, she died three months after her fifth operation.

Based on this passage, when was the first gender reassignment surgery performed?
The relevant information to answer the above question is: Lili Elbe was the first known recipient of male-to-female sex reassignment surgery, in Germany in 1930.
Therefore, the answer is 1930.