With reference to the International Day of Sign Languages, consider the following statements:
1. The International Day of Sign Languages was first celebrated in 2018 as part of the International Week of the Deaf.
2. The choice of 23 September commemorates the date that the World Federation of the Deaf (WFD), a federation of 135 national associations of deaf people, was established in 1951.
Which of the statements given above is/are correct?