Help

Clear answers, local data

Which date format should I enter?

Dates use YYYY-MM-DD, such as 2026-08-03. The Date Format Checker uses the order you select and warns when the same text could mean another date.

Why can a day differ from 24 hours?

Clocks can move forward or backward for daylight saving. Moving to the same time tomorrow can therefore be different from adding exactly 24 hours.

Do you save my dates?

No calculation or imported event values are stored by default. Only display preferences and work calendars you explicitly save use local browser storage.

Offline?

After a successful visit, pages you have opened can work without an internet connection. Holiday information is included with the app, while time zone rules come from your browser.

Need help? date@bluesparrow.dev