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Recommendations of AHG 9 Representing time: avoid using ISO 19108 & (later) revise to be lighter weight #490
_- Date and time standards are not the focus of ISO/TC 211. Generally, ISO/TC 211 is a user of date and time standards. The evelopment of date and time standards should be deferred to groups dedicated to it, such as ISO/TC 154/WG 5 “Date and time” and OGC Temporal DWG.
Experts generally do not think that a “geographic information focused date and time standard” is needed as it is difficult to conceive a date and time topic that only works for geographic information. Most needs for date and time are generic concerns, not bound to the geographic information domain.
ISO 19108 is still relevant and is being used by some standards. While it should be revised to address some of its weaknesses, it should be made lightweight based on a generic date and time model, such as ISO 34500, which is being developed. It should be revised in the future and confirmed at this round of review.
ISO/TC 211 should find a way to participate or at least provide input to the groups that focus their work on date and time standards, such as ISO/TC 154/WG 5 and the OGC Temporal DWG. The PMG could consider what types of collaborative arrangements are possible.
The work of AHG 9 can be considered complete and therefore can be disbanded._
AG3/N288 Minutes of PMG, December 2022:
_The four recommendations can be summarised as:
Date and time standards are not the focus of ISO/TC 211 and should be considered in e.g. ISO/TC 154/WG 4 “Date and time”
ISO 19108 Temporal schema is still relevant and is being used by some standards. It should be revised in future into a lightweight document based on a generic date and time model, such as the (in progress) ISO 34500
ISO/TC 211 should provide input to ISO/TC 154/WG 4 and OGC Temporal DWG
PMG recommendation, December 2022: PMG "recommend that projects consider whether their requirements for expressing time can be satisfied by directly citing non-TC 211 time standards from ISO, IETF, and W3C."_
Presentation to plenary (TC 211/N 5847)
Suggested resolution: ISO/TC 211 approves the recommendations in the report: to use general standards for time whenever possible and to collaborate with ISO/TC 154/WG 5 and OGC Temporal DWG.
Actual resolution (Resolution 2022-21)
ISO/TC 211 notes the report (N 5837) from Ad-Hoc Group 9 Representing time. ISO/TC 211 resolves to disband Ad Hoc Group 9. ISO/TC 211 expresses its appreciation to Mr. Ronald Tse, for his dedicated work to lead the AHG, and thanks all members of this group.
Recommendations from AHG9 (TC211/N5837):
_- Date and time standards are not the focus of ISO/TC 211. Generally, ISO/TC 211 is a user of date and time standards. The evelopment of date and time standards should be deferred to groups dedicated to it, such as ISO/TC 154/WG 5 “Date and time” and OGC Temporal DWG.
AG3/N288 Minutes of PMG, December 2022:
_The four recommendations can be summarised as:
PMG recommendation, December 2022: PMG "recommend that projects consider whether their requirements for expressing time can be satisfied by directly citing non-TC 211 time standards from ISO, IETF, and W3C."_
Presentation to plenary (TC 211/N 5847)
Suggested resolution: ISO/TC 211 approves the recommendations in the report: to use general standards for time whenever possible and to collaborate with ISO/TC 154/WG 5 and OGC Temporal DWG.
Actual resolution (Resolution 2022-21)
ISO/TC 211 notes the report (N 5837) from Ad-Hoc Group 9 Representing time. ISO/TC 211 resolves to disband Ad Hoc Group 9. ISO/TC 211 expresses its appreciation to Mr. Ronald Tse, for his dedicated work to lead the AHG, and thanks all members of this group.