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parity: checking ΔT source

Never look at the Sun without filters certified for solar viewing. A partial eclipse is more dangerous than the ordinary Sun, not less: the crescent is just as intense, but the dimmed sky weakens the reflex that normally stops you looking. Cameras, binoculars and telescopes are more dangerous still. What that means

Observing site

Result

of the Sun’s area, at maximum

Contacts

EventUTAlt

ΔT — an open question

The sky at your site

As seen by eye, zenith up. Sun & its track Moon & its track Tracks run well beyond C1 and C4, and are cut at the horizon.

Obscuration through the event

Area covered Sun’s altitude

The shadow on the globe

Edge of the partial eclipse Umbral track Umbra is ~3 px at this scale; the ring is a marker, not the shadow.

Path of totality

Central line Path limits Your site

What this tool will not tell you