Content for date difference calculator will go here.
Date difference: exact calendar gap between two dates
1) Core idea
Compute the span between a start and end date as calendar years, months, days, plus a total‑days view. Optionally use inclusive ranges.
2) Flow you can trust
- Calendar math rolls years → months → days to respect real month lengths.
- Total days are taken from the exact time difference between the two dates.
- “Include end day” adds one day to the final count for inclusive ranges.
3) Sanity checks
- End date must be on or after the start date.
- Leap years and variable month lengths are handled automatically.
- Local timezone can shift boundaries at midnight.
4) Shortcuts
- Use inclusive mode for project spans and filing windows.
- Switch to total days when you need exact day counts.
5) Pitfalls
- Adding months to the 29th–31st lands on the last valid day of shorter months.
- Cross‑DST transitions can shift clock time though calendar math stays correct.
6) Micro examples
- 01/01/2024 → 01/03/2024 = 0y 2m 0d; total days = 60 (leap year).
- 28/02/2025 → 01/03/2025 = 0y 0m 1d; inclusive adds +1.
7) Mini‑FAQ
- Inclusive range? Counts both start and end days; add +1 to day total.
- Why do months differ? Calendar months vary in length; totals use pure time delta.
8) Action tip
Pick your dates, copy both calendar and total‑days results, and save them with your project notes.