Distinguish all-day events from timed calendar intervals
An all-day absence becomes a twenty-four-hour UTC interval and shifts across local dates.
- Focused work estimate
- 1h + prerequisites
- Priority in the scenario
- Medium
- Engineering practice
- Time modeling
Estimated field mix
- Integrations60%
- Backend40%
Field percentages are editorial estimates of the ticket's engineering focus. They total 100%; they are not measured time, proficiency scores, or ownership evidence.
Review it, then add it to your workspace.
The board opens an editable draft; nothing is saved until you confirm it. Sign-in and workspace permissions apply, and Demo boards remain ephemeral.
Project context
A fictional booking service supports consultants in multiple time zones. Recurring events, revoked access, and delayed callbacks cause missed conflicts.
Setup prerequisites
- Author synthetic calendars and a local provider double with recurrence, timezone, and access-revocation cases.
Preceding work
No earlier ticket is required. Complete the project setup above.
Acceptance criteria
- Represent all-day dates separately from instants.
- Declare exclusive end semantics.
- Preserve the event's timezone context.
Implementation constraints
- Do not infer an event zone from the server timezone.
Verification to include
- Render a timed event and all-day absence correctly.
- Reject missing timezone context for ambiguous local times.
Deliverables
- Temporal data contract.
Rollout and recovery
Version the contract before importing calendar records.
Value of the work
For the engineer: Practice temporal modeling, synchronization lifecycles, and privacy-preserving projections.
For the team: Reduce scheduling ambiguity through explicit availability contracts and recoverable synchronization.
Evidence boundaries
Outcome Evidence: Tests, patches, and runbooks are requested deliverables. They become Outcome Evidence only through a qualified Mission and immutable Evidence IDs.
Ownership Evidence: Independent adaptation must be observed under a declared verification policy and cite immutable Evidence IDs. Completing a planning ticket establishes no Ownership Evidence.