"fullwidth colon" olarak geçiyor. nokta üst üstenin
kanji gibi geniş karakterli yazılarda kullanılan bir hali.
"In computing, the colon character is represented by ASCII code 58, (HTML :) and is located at Unicode code-point U+003A (colon). Scripts comprising wide characters, such as kanji, use a full-width equivalent, :, located at Unicode code point U+FF1A (fullwidth colon)."
en.wikipedia.org(punctuation)
www.fileformat.info