🌑 Eclipse Totality Timer

Totality window

Gets your position and computes totality times for the Aug 12, 2026 eclipse from NASA Besselian elements — works offline once installed.

Enter coordinates in decimal degrees (west longitudes negative). Computed offline from NASA Besselian elements.

Latitude (°N)

Longitude (°E)

Totality starts

Totality ends

Totality duration (seconds)

SET TIMES AND ARM

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Sun obscured: 0%

Alert log

Test sounds

Check your volume before the event — try each alert.

Keep this screen unlocked and the app open — alerts need the tab active to fire reliably.