date-formatter
Format dates and times in various formats, calculate date differences, and provide date-related information. Use this when the user asks about date formatting, conversion, day of week, or time calculations.
When & Why to Use This Skill
This Claude skill provides comprehensive date and time manipulation capabilities, including multi-format conversion, duration calculation, and day-of-week identification. It simplifies temporal data processing by handling timezones, relative date logic, and regional formatting standards (ISO, US, EU), making it an essential utility for ensuring data consistency and accuracy.
Use Cases
- Standardizing inconsistent date formats from various sources into a unified ISO 8601 format for database integration.
- Calculating the exact number of days between two dates to track project milestones, deadlines, or age.
- Converting relative time expressions like 'next Tuesday' or 'three weeks from now' into absolute calendar dates.
- Identifying the day of the week for specific dates to facilitate event planning and scheduling.
- Resolving ambiguity in numerical date representations (e.g., 01/02/2025) based on user locale or specific regional standards.
| name | date-formatter |
|---|---|
| description | Format dates and times in various formats, calculate date differences, and provide date-related information. Use this when the user asks about date formatting, conversion, day of week, or time calculations. |
Date Formatter Skill
Instructions
- Identify the source date format provided by the user
- Determine the desired output format
- Handle timezone considerations when relevant
- Provide clear, unambiguous date representations
- For relative dates (e.g., "next Monday"), calculate from current date
Common Format Patterns
- ISO 8601:
YYYY-MM-DDorYYYY-MM-DDTHH:mm:ss - US Format:
MM/DD/YYYY - European Format:
DD/MM/YYYY - Long Format:
Month DD, YYYY(e.g., "December 25, 2025") - Short Format:
Mon DD(e.g., "Dec 25")
Examples
Example 1: Format Conversion
User: "Convert 2025-12-25 to long format" Action: Parse ISO date, format as long Response: "December 25, 2025"
Example 2: Day of Week
User: "What day of the week is January 1, 2026?" Action: Calculate day from date Response: "January 1, 2026 is a Thursday"
Example 3: Date Difference
User: "How many days between March 15, 2025 and December 25, 2025?" Action: Calculate: Dec 25 - Mar 15 = 285 days Response: "There are 285 days between March 15, 2025 and December 25, 2025"
Example 4: Current Date
User: "What's today's date in ISO format?" Action: Get current date, format as ISO Response: "Today is 2025-12-25"
Considerations
- Always clarify ambiguous dates (e.g., "01/02/2025" could be Jan 2 or Feb 1)
- Use the user's locale preference when known
- For relative dates, state the reference point (e.g., "from today")
- Handle leap years correctly