“No background information is more critical to the interpretation of Revelation than the date when the book was written. Ancient and modern scholars are divided between two alternatives: a clear majority date the book in the mid 90s of the first century, and a significant minority date it in the late 60s. 1) The majority view dates Revelation near the end of the reign of Emperor Domitian (A.D. 81 to 96). Support for this date is attested by ancient writers, including St. Irenaeus ( A.D. 180), Victorinus of Pettau ( A. D. 270), and St. Jerome (A. D. 370). Most modern scholars adopt this view. 2) The minority view dates Revelation near the end of the reign of Emperor Nero or shortly thereafter ( A. D. 54 to 68). Ancient testimony to this date comes from the titles of Syriac versions of Revelation.” (note: no evidence, just the title of the book). The above quotation is taken from Ignatius Catholic Study Bible with the introduction by Scott Hahn and Curt Mitch.
“Information contained in the book itself confirms this date. (around A.D. 96) from the Acts of the Apostles Chapter 20:7 that Christians met together on the 'first day of the week' (our Sunday), Revelation 1:10 describes as “Dies Domini”. And the life of the Christian communities of Asia Minor as reflected in the book clearly indicates they were at a more mature stage than the churches referred to in other New Testament texts. All this means that the year 95, given by tradition, is realistic and acceptable.” This quotation is taken from the Catholic Navarre Bible.
“The date of the book in its present form is probably near the end of the reign of Domitian (A.D. 81-96),..” This quote is taken from the Catholic New American Bible.
The following information is taken from its Encyclopedic Dictionary.
New American Bible, English translation of the Bible, approved by the United States Conference of Catholic Bishops for use by English-speaking Catholics of the U.S. In the Mass Lectionary and other liturgical books; it was revised in 1987 and 1991, with significantly improved literary style and accuracy. The work of translation that resulted with the publication of the NAB in 1970 began in 1944 with the sponsorship of the Bishops' Committee on the Confraternity of Christian Doctrine, though the NAB differs greatly from the first Confraternity Edition by way of textual criticism, translation from texts in the original biblical languages, and the discovery of significant biblical manuscripts, previously unknown, particularly those of Qumran and other Dead Sea scrolls.