DateSpanOrbit

DateSpanOrbit helps you handle everyday date calculations without internet access.

Compare two dates with clear include-start and include-end rules, then view the total day count and the calendar span broken into years, months, and days.

Shift any date forward or backward by days, weeks, months, or years. When a target month does not contain the original day number, the app uses the last valid day and explains the adjustment.

Count working days with your own weekly rest-day choices plus local excluded dates and extra work dates. The app does not use online holiday data and does not claim legal calendar knowledge.

Save personal dates for anniversaries, plans, or recurring events. Add tags, notes, visibility controls, and archive status, then review how long until or since each date.

Recent calculations stay on the device so you can reopen earlier inputs, review the saved result, or clear history when needed.

Everything is stored locally for offline use. No account, sync, calendar access, or online lookup is required.