Feb 20
The Chinese character “〇” is now rarely used. People will incorrectly use Arabic numeral “0”, Latin letter “O” or “o”, or another Chinese character “零” instead of “〇” even in the official documentations, licenses, commemorates, etc. where “〇” should be used. The correct Chinese version of Year 2009 should be “二〇〇九”, but in most cases, you can only see “二00九”, “二OO九”, “二oo九” or “二零零九”. In Japan, people seldom make this mistake. (Why not?) ◎◎ More »»
There are several numeral systems encoded in Unicode including Mongolian digits. You may think that everything is normal with the ten Mongolian digits at first. But they are really mysterious. ◎◎