iTP Secure WebServer System Administrators Guide (Version 7.5+)

Table 6 (page 81) lists the locales that are displayed on running the locale -a command.
Table 6 List of Valid Locales
nl_BE.ISO8859-1fr_BE.ISO8859-1da_DK.ISO8859-1
nl_NL.ISO8859-1fr_CA.ISO8859-1de_CH.ISO8859-1
no_NO.ISO8859-1fr_CH.ISO8859-1de_DE.ISO8859-1
pt_PT.ISO8859-1fr_FR.ISO8859-1el_GR.ISO8859-7
sv_SE.ISO8859-1is_IS.ISO8859-1en_GB.ISO8859-1
tr_TR.ISO8859-9it_IT.ISO8859-1en_JP.ISO8859-1
zh_TW.eucTWja_JP.AJECen_US.ISO8859-1
ja_JP.SJISes_ES.ISO8859-1
ko_KR.eucKRfi_FI.ISO8859-1
Configuring Support For Certificates with Non-English Characters 81