daylight saving time
Let an agent explain daylight saving time, relay history, rules by region, effects and abolition debates from time standards, government and research sources with positions attributed, describe the named zones and regional practices, and distinguish DST from standard time, time zones, UTC offsets in general and permanent daylight time proposals.
Bundle → Layer → Finding → Questions Filled
4 bundles · 8 layers · 8 findings · 16 questions
Understand What daylight saving time is.
Definition
Definition.
Definition
Definition.
- What is daylight saving time, and how does it differ from standard time, time zones, UTC offsets and permanent daylight time? definition
- Is the question about current clock change dates, which need current sources, history or health debates? boundary
Zones
Named zones.
Zones
Zones.
- What are Eastern Daylight Time, European summer time and Italy s practice? definition
- Which entry fits the specific zone? action
History History.
Origins
Origins.
Origins
Origins.
- How did Willett s proposal and the 1916 wartime adoption start DST? provenance
- Which references are standard? provenance
Rules
Current rules.
Rules
Rules.
- What are current DST rules in the EU and US, checked against current sources? provenance
- Which sources are cited? provenance
Effects Effects and debates.
Health
Health effects.
Health
Health.
- What do sleep researchers and medical bodies say about clock changes and health, with positions attributed? provenance
- Is the presentation neutral and attributed? boundary
Energy
Energy savings.
Energy
Energy.
- What do studies find about energy savings from DST, with findings attributed? provenance
- Which entry fits daylight saving time energy studies? action
Context Policy.
EU
EU abolition proposal.
EU
EU.
- What happened to the EU proposal to end clock changes, checked against current sources? provenance
- Is the information current? boundary
Time zone data
IANA database.
Time zone data
Time zone data.
- How does the IANA time zone database track DST changes for software? provenance
- Which entry fits tz database? action
Classifiers Filled
- Family
- Thing Registry
- Category
- Information and virtual systems
- Entry kind
- thing
- Plane
- INF
- Domain
- INF.KNW
- Other names and narrower kinds
- Eastern Daylight Time, summer time in Europe, daylight saving time in Italy
What it is Filled
The practice of advancing clocks, usually by one hour, during the warmer months so that evenings have more daylight, called summer time in Europe, where the EU synchronises changes on the last Sundays of March and October, and daylight saving time in North America, as with Eastern Daylight Time; first adopted widely by Germany and Austria-Hungary in 1916, it is used in many but not all countries, with Italy and others following EU rules, and debates about abolishing clock changes, including a 2019 European Parliament vote not implemented by member states and US proposals for permanent daylight time, are attributed, citing effects on health, energy and safety.
Why it exists Filled
Let an agent explain daylight saving time, relay history, rules by region, effects and abolition debates from time standards, government and research sources with positions attributed, describe the named zones and regional practices, and distinguish DST from standard time, time zones, UTC offsets in general and permanent daylight time proposals.
Distinguishing features Filled
- Seasonal change
- One-hour shift typical
- Regional variation
- Contested benefits
What robots and AI may and may not do Filled
Must not
- Present stale rules or dates as current.
- Schedule events without accounting for different change dates across countries.
- Take a side on abolition debates while presenting it as fact.
Only with a human decision
- Changing time zone settings on systems many people rely on.
May
- Explain daylight saving time and current rules with dates and sources.
- Convert times across zones and dates, accounting for daylight saving changes.
Moral aspects Filled
- Scheduling errors can make people miss medical, legal or travel appointments.
Who is affected
- Travellers
- Shift workers
- Users of scheduling systems
Owners Filled
Steward
National governments set time rules; time zone databases record them.
Master systems
- Time zone databases
Links to other meta-models Filled
parent
- Q849275 - registry parent class
related
- civil time - in registry terms
- Directive 2000/84/EC - in the EU
- Eastern Daylight Time
- standard time
What else AI and robots need to interact with it Filled
Identity and identifiers required Filled
- Vercy registry: vr.tr.daylight-saving-time
- Wikidata: Q36669 (https://www.wikidata.org/wiki/Q36669)
Direct properties not applicable Not applicable
- first national adoption: 1916 year - Germany and Austria-Hungary
- EU summer time rules: last Sunday of March to last Sunday of October note - Directive 2000/84/EC
- European Parliament vote to end changes: 2019 year - not implemented, check current status
Plane INF: no invented physical properties.
Recognition optional Filled
- Seasonal clock advance
- Eastern Daylight Time, summer time in Europe, daylight saving time in Italy
- Standard time is the base; time zones are regions; UTC offsets define local time; permanent daylight time would end changes
- Not a physical object; seen in clock changes and time zone abbreviations.
Capabilities and actions required Filled
- explain history and rules
- relay regional practices
- describe named zones
- present abolition debates with attribution
Hazards and failure modes required Filled
- Stale rules and dates
- Partisan framing of abolition debates
- Scheduling errors across zones
Standards and interfaces required Filled
- EU Directive 2000/84/EC
- US Energy Policy Act of 2005 DST dates
- IANA time zone database
Context of use required Filled
- Shifting clock time to use evening daylight.
- European summer time
- North American daylight time
- southern hemisphere DST
- double summer time historically
Sources Filled
- Wikidata item Q36669: daylight saving time - identity and sense of the item
- Wikipedia: Daylight saving time - general description of the item
Open questions
- How should the status of EU and US abolition proposals be kept current?
- Should national DST histories be separate entries?
- How should the IANA database be linked?
Machine files
Provenance
thing registry research (pass 2) · unreviewed
Built from: models/things/publications/thing-q36669/spec.json