Date Resolution

VerifiedSafe

Resolves a target date from various textual inputs (today, tomorrow, weekday names, specific dates) and returns structured date metadata including day names, ISO week, month, quarter, and relative positioning. Supports week resolution for weekly planning rituals by computing week start/end dates and identifying current or past weeks. Useful for scheduling tasks that require consistent date formatting and relative date logic.

Sby Skills Guide Bot
ProductivityIntermediate
6/2/2026
Claude Code
#date-resolution#planning#time-utility#isoweek

Recommended for

Automated summary

This sub-skill resolves a target date from user input and returns all date-related fields needed for planning rituals.

Strengths

  • Supports a wide range of date formats (relative, weekdays, ISO dates, etc.)
  • Returns structured fields including day, ISO week, month, quarter, and relationship to today
  • Handles weekly scopes with week start/end calculations

Limitations

  • Relies on macOS-specific `date` commands (does not work on Linux or Windows)
  • No timezone support
  • Input parsing is limited: `next monday` is interpreted as the following Monday, but more complex phrases may fail
When to use it

Use this skill in a planning ritual that requires normalizing temporal references into a unified date format.

When not to use it

Do not use this skill for advanced date calculations requiring timezone handling, precise times, or complex recurrence patterns.

Security analysis

Safe
Quality score95/100

The skill only uses the date command to format dates; no destructive or exfiltrating actions, and user input is safely handled with quoted variables preventing injection.

No concerns found

How this analysis is made

Examples

Resolve next Monday
Get dates for next Monday
Resolve today
Get dates for today
Resolve a specific ISO week
Get dates for 2026-W07

name: get-dates description: Resolve target date from argument and return all date formats needed for planning rituals. disable-model-invocation: true allowed-tools: Bash

Get Dates

This sub-skill resolves a target date from user arguments and returns all date-related fields needed by planning rituals.

Input

The $ARGUMENTS variable contains the raw date argument:

  • (empty) → today
  • today → today
  • tomorrow → tomorrow
  • monday, tuesday, etc. → next occurrence (including today if matches)
  • next monday, next tuesday, etc. → next occurrence after today
  • YYYY-MM-DD → specific date

Instructions

  1. Parse $ARGUMENTS to determine the target date

  2. Use macOS date commands to resolve relative dates:

    # For "tomorrow"
    date -v+1d +"%Y-%m-%d"
    
    # For next weekday (e.g., "monday")
    # Calculate days until next occurrence
    
  3. Calculate all date fields for the resolved target date:

    # Day of week
    date -j -f "%Y-%m-%d" "$TARGET_DATE" +"%A"
    
    # ISO week number
    date -j -f "%Y-%m-%d" "$TARGET_DATE" +"%Y-W%V"
    
    # Month
    date -j -f "%Y-%m-%d" "$TARGET_DATE" +"%Y-%m"
    
    # Quarter
    # Q1: Jan-Mar, Q2: Apr-Jun, Q3: Jul-Sep, Q4: Oct-Dec
    
  4. Determine relationship to today:

    • is_today: target date equals current date
    • is_future: target date is after current date
    • is_past: target date is before current date

Output

Return structured JSON:

{
  "target_date": "2026-02-15",
  "day_name": "Sunday",
  "day_short": "Sun",
  "week": "2026-W07",
  "month": "2026-02",
  "month_name": "February",
  "quarter": "2026-Q1",
  "year": "2026",
  "is_today": false,
  "is_future": true,
  "is_past": false,
  "days_from_today": 1
}

Error Cases

  • Invalid date format: Return error with valid format examples
  • Past date: Allow but set is_past: true for caller to handle

Example Resolutions

| Input | Target Date | Notes | |-------|-------------|-------| | (empty) | 2026-02-14 | Today | | today | 2026-02-14 | Today | | tomorrow | 2026-02-15 | +1 day | | monday | 2026-02-16 | Next Monday (including today if Monday) | | next monday | 2026-02-16 | Next Monday (always future) | | 2026-02-20 | 2026-02-20 | Specific date |


Week Resolution (for weekly rituals)

When scope=week is passed in arguments or the input contains an ISO week format:

Week Input Formats

  • (empty) → current week
  • last week → previous week
  • YYYY-Www → specific ISO week (e.g., 2026-W07)

Week Calculations

# Get current ISO week
date +"%G-W%V"

# Get week start (Monday) from ISO week
# Use: date command with week calculation

# Get week end (Sunday) from ISO week
# week_end = week_start + 6 days

Extended Output for Weekly Scope

When resolving weeks, include these additional fields:

{
  "target_date": "2026-02-14",
  "day_name": "Saturday",
  "day_short": "Sat",
  "week": "2026-W07",
  "week_start": "2026-02-09",
  "week_end": "2026-02-15",
  "is_current_week": true,
  "is_past_week": false,
  "month": "2026-02",
  "month_name": "February",
  "quarter": "2026-Q1",
  "year": "2026",
  "is_today": false,
  "is_future": true,
  "is_past": false,
  "days_from_today": 1
}

Week Resolution Examples

| Input | Target Week | Week Start | Week End | |-------|-------------|------------|----------| | (empty) scope=week | 2026-W07 | 2026-02-09 | 2026-02-15 | | last week | 2026-W06 | 2026-02-02 | 2026-02-08 | | 2026-W05 | 2026-W05 | 2026-01-26 | 2026-02-01 |

Week Resolution Logic

  1. If input matches YYYY-Www pattern → use directly
  2. If input is last week → current week minus 1
  3. If scope=week with empty input → current week
  4. Calculate week_start as the Monday of that week
  5. Calculate week_end as the Sunday of that week

From the file to a first result

The download contains exactly the content displayed on this page. This copy may differ from the latest version in the source repository.

View the source and supporting files

This download contains SKILL.md only. Any scripts, references, templates and dependencies are not included. Get the required files from the source, preserving their directory structure, before continuing.

1. Download the file

Download SKILL.md

From the root of a test project, save the file as .skill-downloads/date-resolution-mmk3nid9/SKILL.md, or use the command below. This folder is for inspecting the skill before installation.

Command for macOS/Linux or WSL: requires a POSIX shell and curl. On Windows without WSL, use the download button and create the folder manually.

mkdir -p '.skill-downloads/date-resolution-mmk3nid9' && curl --fail --show-error --location 'https://skills-guides.com/api/skills/date-resolution-mmk3nid9/download' --output '.skill-downloads/date-resolution-mmk3nid9/SKILL.md.part' && mv '.skill-downloads/date-resolution-mmk3nid9/SKILL.md.part' '.skill-downloads/date-resolution-mmk3nid9/SKILL.md'

2. Check prerequisites

Read SKILL.md before using it. If it references scripts or external services, inspect them and prepare the required access in your test environment.

Tools declared by the author (check availability in your agent): Bash

No recognized prerequisites section in this file. This does not mean it is self-contained: libraries, tools and access requirements may be mentioned elsewhere in the content or source repository.

The platforms on this page are catalog indications. The paths below follow tool documentation; they do not prove this skill has been run in those tools. No minimum tool version is confirmed for this listing.

3. Load the skill

After inspection, copy the complete folder into your project using one of the commands below, then open a new tool session. The command stops if a folder with the same name already exists: compare the files before replacing it.

Claude Code
test -f '.skill-downloads/date-resolution-mmk3nid9/SKILL.md' && test -s '.skill-downloads/date-resolution-mmk3nid9/SKILL.md' && mkdir -p '.claude/skills' && test ! -e '.claude/skills/get-dates' && cp -R '.skill-downloads/date-resolution-mmk3nid9' '.claude/skills/get-dates'

OpenSkills

OpenSkills must already be installed. The local install/read procedure is checked with OpenSkills 1.5.0, which requires Node.js ≥ 20.6.0. Catalog slugs are not resolved automatically.

Official OpenSkills installation
openskills install './.skill-downloads/date-resolution-mmk3nid9'

openskills read 'date-resolution-mmk3nid9'

Reading should display the installed file content and its base directory. It does not run the skill or install its dependencies.

For an agent that reads AGENTS.md, then sync the index. This command changes AGENTS.md: review the diff before using it.

openskills sync

Manual method or another tool: attach SKILL.md to a conversation, or open it in an agent that can read files. Include any required supporting resources. No universal folder is recognized by every tool.

4. Try a first task

Use a short, synthetic input: an API endpoint, a small document or an interface brief. In a new conversation, attach the file or give the agent its path, then adapt this request:

Read .skill-downloads/date-resolution-mmk3nid9/SKILL.md and apply its instructions to this example: [describe a test input]. Identify any missing files, dependencies or access. Produce the result requested by the skill without inventing data or running unreviewed scripts.

Expected result: output matching the skill instructions, or a precise list of missing prerequisites. A read confirmation alone does not validate a first use. If an external resource is unavailable, that path remains untested.

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