What problem does it solve? Manually computing the exact start and end dates of the previous calendar month is error-prone, especially across month boundaries, timezones, and leap years. This Skill resolves "lastMonth" to concrete, trustworthy date bounds so reports and queries use correct time windows. ## Core Features & Use Cases - Date Range Resolution: Runs a bundled Node.js resolver that returns inclusive civil dates (start/end) in your local timezone. - UTC Instant Output: Provides startUtc and endExclusiveUtc as a half-open range for timestamp-based database queries. - Context Metadata: Returns days, timezone, and asOf so you know the span length and when the resolution occurred. - Use Case: Before generating a monthly sales report, run the resolver to get exact bounds like 2024-05-01 through 2024-05-31, then use those dates to filter your data query. ## Quick Start Ask the AI to resolve last month's date range using the lastMonth skill before running a monthly report or month-end summary task.