Explains time zones in timestamps and business dates
Event timestamps need a zone; business dates have no time of day.
Can AI do this?
AI does this partly Some of the tested AI models master this; others do not show it. 3 of 10 models master it.
| Model | Tier | Probability of mastery | Status |
|---|---|---|---|
| gemini-4-argon | Flagship | 99% | Mastered |
| gemini-3.1-pro-preview | Flagship | 58% | Not shown |
| gpt-6-astra | Flagship | 60% | Not shown |
| claude-fable-5-1 | Flagship | 99% | Mastered |
| gemini-3.8-flash | Mid tier | 57% | Not shown |
| gpt-6.1-sol | Mid tier | 60% | Not shown |
| claude-sonnet-5-5 | Mid tier | 100% | Mastered |
| gemini-3.5-flash-lite | Low cost | 57% | Not shown |
| gpt-6-luna | Low cost | 59% | Not shown |
| claude-haiku-5-5 | Low cost | 58% | Not shown |
Mastered means a probability of at least 90% that the model has this knobit, estimated from its graded answers. “Not shown” means the answers do not settle it either way. How the models are tested.
What it looks like in practice
Expected result: Event timestamps need a zone; business dates have no time of day
How it is assessed: Chooses the type for sample temporal columns
Related knobits
Needed for
- K-827 Recognises an event timestamp stored without a time zone
- K-828 Recognises a business date stored with a time of day
All 33 knobits of Generate and review DDL.
Source: Data-management practice used by the stage 8 reference and review checklist