Found in an old notebook I have:

Some character sets:
Arabic
Cyrillic
Latin
Greek
Roman
Slavic

Use
given name:
family name:
to express first, last name for localization

Year Formats:
Gregorian: 2007
Japan (emperor) 19 Heisei era
Taiwan 2550 (Buddhist year)
Hebrew 96 (1911 based)

Hijri - Islam
Lunar- Asia

ISO 86-01 universal standard for numerical data.

For time zones use GMT/UTC + Offset

Examples of how numbers are expressed:

England: 15,345.67
Japan: 15.345,67
Switzerland: 15'345,67
France: 15 345,67
India 15,34,567.89

Phone numbers:
USA +1 (555) 555-1212
France: 33.1.6172.8075

Japan and Russian address go from Least Granular to Most granular top to bottom:

Japan
104-0032 Tokyo
Hacchorbori 3-11-11
Miki Building
Shibuya
Toyko

for efficient internationalization:

- avoid using text in images
- don't use flags for countries
- Make room for expansion
- Make the design flexible and sparse

115% for Japanese
124% for Korean
Hinigan- Kanji - Japanese idiographs

Double Byte characters
radicals - 214 radicals
A-Z Pick list will not localize well.

Unicode.org
ASCII
latin-1
Latin-2
Greek Cyrillic
Thai
CJK
Korean

UTF-8 is most used on the web.