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    Repair Date And Time Bugs

    1

    Repair date, time zone, daylight-saving, scheduling, and timestamp bugs in existing applications.

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    Repair Date And Time Bugs

    Repair Date And Time Bugs

    Example session with this skill installed

    The booking system shows appointments one hour early since the clocks changed last weekend. The database uses Postgres and the backend is Node.js. Check the schedule logic.

    • Read your context and instructions
    • Compiled the repair date

    Temporal Bug Found: Zoned Date-Time shift during DST transition.
    Root Cause: Used fixed UTC offsets instead of IANA named zones.
    Repair Applied: Switched to 'America/New_York' named zone for recurring appointments.
    Validation: Verified 09:00 wall-clock time persists across March transition.

    Connects securely to your tools. The creator never sees your data.

    About this skill

    The problem

    Temporal bugs are notoriously difficult to track, often surfacing only during daylight-saving transitions, at the end of a month, or when users access the app from a different time zone. Hardcoding offsets or treating date-only values as UTC timestamps leads to shifting deadlines, incorrect booking times, and corrupted reports.

    What it does

    • Analyzes the flow of temporal data from input through storage to output to identify incorrect assumptions.
    • Classifies values into instants, zoned date-times, local date-times, date-only values, or durations to apply the correct logic.
    • Repairs UTC and local-time confusion without using brittle hardcoded hour offsets.
    • Standardizes API serialization and database storage formats to prevent environment-specific drift.
    • Implements boundary-focused tests for leap days, DST transitions, and midnight rollovers.

    Frameworks & tools

    Works across all stacks including Node.js, Python, Ruby, Go, and Java. Supports SQL and NoSQL databases, ORMs, and date-libraries like Luxon, Day.js, or date-fns.

    Why this beats prompting it yourself

    Generic prompts often suggest "just use UTC" without considering the business intent for local schedules or date-only values like birthdays. This skill enforces a strict temporal contract, ensuring that fixes for one time zone do not break the app for users in another.

    Use cases

    • Fixing appointments that shift by an hour after a daylight-saving change.
    • Preventing "expired" flags from triggering too early for users in Western time zones.
    • Standardizing mixed timestamp formats in legacy databases.
    • Ensuring daily reports aggregate data based on the business time zone rather than server local time.

    Known limitations

    Cannot reliably fix historical data where the original time zone or intent was never recorded. Requires manual verification for irreversible production data migrations.

    Find more skills like this on the Claude Skills Marketplace, the Codex Skills Marketplace and the Gemini Skills Marketplace, or browse Claude Skills for Agents & Orchestration.

    Cannot fix historical data with unknown original time zones. Requires manual verification for destructive database migrations.

    How to use

    1. 1

      Connect your agent to the Agensi MCP

      Copy the prompt and paste it into Claude, ChatGPT, Cursor or any agent that supports MCP. It sets up the connection for you. Manual setup

    2. 2

      Sign in to Agensi

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    3. 3

      Ask for what you need

      Your agent loads this skill and uses it on your task. It always asks before buying a skill.

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    Software
    prismaNode.js

    Permissions

    Terminal / Shell
    Read Files
    Write Files

    Permissions are limited to the active local workspace and are used to inspect user-supplied or local workspace files; create or modify bounded local fixes, tests, documentation, or review artifacts; run repository-supported local tests, checks, builds, or parsing commands. The skill package does not require bundled credentials, unrestricted external network access, or automatic production changes.

    Listed3 months ago
    Updated9 days ago

    What's inside

    Frequently Asked Questions

    This skill specializes in detecting and fixing complex temporal errors like DST shifts, UTC-to-local confusion, and improper timestamp serialization that standard code reviews often miss.

    The skill is designed to be language-agnostic and works with major stacks including Node.js, Python, Java, and Go, as well as common libraries like Luxon, Day.js, and date-fns.

    Unlike generic AI prompts, this skill uses a strict temporal contract framework to differentiate between absolute instants and local wall-clock times, preventing "fixes" that inadvertently break other time zones.

    Upon purchase, you receive the full skill package, including the logic for identifying boundary cases (leap days, DST) and a standardized methodology for repairing database and API time-zone drifts.

    Yes, it can analyze legacy databases to standardize mixed timestamp formats and propose fixes for inconsistent storage patterns that cause reporting errors.

    The skill cannot reconstruct missing historical metadata; if a timestamp was stored without a time zone and the original intent is unknown, manual verification will be required for data recovery.

    New in Agents & Orchestration