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Today, in some official document I received, an enumeration (of items to
address) had each line prepended with ㈰, ㈪, ㈫ etc.

From context, it is reasonably easy to guess that this might be an equivalent
to numbers (①, ② etc) or roman letters (a, b, c etc).

I am familiar with the use of half-width katakana (ｱ, ｴ, ｲ etc) for that
purpose, but it is the first time I see days of the week used that way (and
surprisingly, there seems to be a set of dedicated characters for it).

**Is there a name for this type of enumeration prefix, or at least for the
characters themselves?**

**Do they have any special meaning, beside that of a regular enumeration
(first item, second item etc)?**

**Is it standard to start with ㈰ and go from there? Is there anything after
(土)?**
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2014-07-18T06:57:38.887
17865
2014-07-18T12:48:12.510
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question
kanji
Use of ㈰, ㈪, ㈫ in enumerations
Welcome to the wonderful world of character encodings. :)

If you're unfamiliar with them (things like "ASCII", "UTF-8", "Unicode", all
that jazz), the fast and short of it is: what some computers see as being a ー,
others see as '. If two computers aren't using the same encoding, text can get
jumbled when moving information from one to the other. (This is a heavy
simplification, but this is a Japanese-learning site, not a technical site.
:P)

I don't know the technical details of your situation (what type of computer
the author of the document uses, what font was used, what computer _you_ use,
what fonts are available to you, etc.), but basically what you see as ①, ②,
etc. appears in other fonts and encodings as ㈰, ㈪, etc. in others. More
specifically, according to [this
source](http://detail.chiebukuro.yahoo.co.jp/qa/question_detail/q124603082),
older Mac systems (OS9x and below?) have this issue, and I'd imagine that
other systems might have the same issue depending on fonts and encodings used.

In summary, **this is a technical problem, not a special feature of
Japanese.** If you're more technically comfortable, play around with encoding
settings to see what you come up with.

Lots more details and whatnot can be found
[here](http://www.kotalog.net/archives/4339). Including the answer to your
last question. Is there anything after ㈯? Yes: ㉀. ;)
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2014-07-18T12:48:12.510
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2014-07-18T12:48:12.510
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answer