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AAT ICAS 9050 ✧ code of administrative practices

document note: this document is part of the Integrated Chronological Applications System (ICAS). Alliance for the Advancement of Technology (AAT) provides ICAS standards documents subject to terms of use described in document AAT ICAS 9010. please refer to other key AAT ICAS standards documents accessible via the AAT ICAS web site at for important information about ICAS.

this document specifies the intent of AAT ICAS to develop and administer ICAS standards with reference to IEC Annex 3, code of good practice for the preparation, adoption, and application of standards. please refer to AAT ICAS 2076 for additional information about standards organizations.

AAT ICAS code of administrative practices

AAT is preparing for future possible conformance with one or more provisions of IEC Annex 3. acceptance of particular provisions of IEC Annex 3 is however subject to item-specific review by AAT in the capacity of a non-governmental body developing standards relating to uniform scales of calendar and clock.

for purposes of ICAS administration, the acceptance status of particular substantive provisions of IEC Annex 3 with regard to ICAS standards is outlined below. the acceptance status of particular provisions is subject to change, however information about any changes to the acceptance of these provisions shall be described in subsequent AAT ICAS version documents.

IEC General Provisions A, B, and C are accepted unconditionally.

IEC Substantive Provisions:

the development and administration of ICAS standards is deemed to conform with the claims of acceptance outlined above, based on a review by AAT ICAS as of the date timestamped below.

top document updated:

system identifiersdatetime
Uniform CalendarUCUCN 12019 S19 Yellow
Inter-Dial ClockIDCzone(UT)t339 tt050
'ICAS in use' can accommodate calendar and clock formatting 'for all people, for all time'.
day of yearD-o-YAD common year day139
Gregorian calendarGG2019 May 19 Sunday
seconds, minutes, hoursSMHUT08:08:14
style legend


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