I believe they were thinking of <a href="/wiki/The_Hour_in_the_Library:" title="The Hour in the Library:"><img alt="" src="/w/images/thumb/1/15/Grandfatherclock.png/20px-Grandfatherclock.png" decoding="async" width="20" height="26" srcset="/w/images/thumb/1/15/Grandfatherclock.png/30px-Grandfatherclock.png 1.5x, /w/images/thumb/1/15/Grandfatherclock.png/40px-Grandfatherclock.png 2x" /></a> <a href="/wiki/The_Hour_in_the_Library:" title="The Hour in the Library:">The Hour in the Library</a> indeed; when you <a href="/wiki/Look_for_a_copy_of_the_Index_of_Banned_Works,_1899_Edition" title="Look for a copy of the Index of Banned Works, 1899 Edition">Look for a copy of the Index of Banned Works, 1899 Edition</a>, the hour does seem to always start at 1.
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