Mon 2 Aug 2027 · Africa/Algiers (UTC+1)
Eclipse 2027 in Constantine, Algeria
>99.9%of the Sun covered at maximum, 10:04:19 local time
Constantine is outside the path of totality. The Moon never covers the whole disc from here, so no corona is visible at any point — it is a partial eclipse from first contact to last.
Obscuration
>99.9%
Magnitude
0.998
Sun altitude at max
51°
Maximum at
10:04:19
Magnitude is the fraction of the Sun's diameter the Moon covers; obscuration is the fraction of the Sun's area hidden. Near this path magnitude barely changes city to city, so the numbers that actually tell you what you'll see are duration (in the path) and obscuration (a partial).
Contact times in Constantine
Local times are Africa/Algiers (UTC+1 on 2 August 2027), converted from the app's fixed UTC instants with the IANA time zone database, release 2026c. The UTC instant is printed beside each one.
08:51:4807:51:48 UTC
Partial begins (C1)
The Moon first touches the Sun's edge. The partial phase starts — glasses on.
10:04:1909:04:19 UTC
Maximum eclipse (Max)
Greatest coverage for your location — deepest partial, or the middle of totality.
11:22:2410:22:24 UTC
Partial ends (C4)
The Moon leaves the Sun's disc. The eclipse is over.
There is no second or third contact here — those two are the edges of totality. The sequence runs first contact, maximum, last contact.
129 km
Due south of Constantine lies the central line of the umbra, where totality runs 5m 31s. Everything between here and there is partial; the corona is only visible inside the band.
These times are for Constantine. Drive the 129 km and they all change. Eclipse 2027: Local Times re-solves them for wherever you stop, offline, and wakes you at third contact so the glasses go back on in time.
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Has the sky been clear?
In late July and early August, a given spot in Constantine has had the Sun in clear sky on about 9 days in 10 (90%), at the satellite pass nearest the eclipse, which comes about an hour after it here. Cloud has been rare here at this time of year.
These are the only figures on this page that are not the app’s own. The times above are computed and can be checked to the second; this is measured, and it is history rather than a forecast. NASA’s MODIS instruments map cloud every day in 5 km squares, and the figure is the average share of clear sky over the land within about 12 km of Constantine, every day from 18 July to 17 August, 2001 to 2025 (775 days observed). That makes it the chance a spot there had the Sun in clear sky at that pass. On a partly cloudy day it counts the share of the sky that was clear, so it is the odds for one spot, not a count of clear days. It cannot tell one street from the next, and a satellite pass is not the minute of the eclipse.
Cloud data: NASA MODIS cloud fraction (Terra MOD06_L2, Collection 6.1, 5 km), 18 July–17 August 2001–2025, via NASA GIBS; accessed 27 September 2026.
When it is safe to look
Never look at the partially eclipsed Sun without certified solar-viewing filters — eclipse glasses that meet the ISO 12312-2 standard, or a safe solar telescope/camera filter. Ordinary sunglasses are not safe. Looking through binoculars, a telescope or a camera without a proper solar filter can cause permanent eye injury in an instant.
Where these numbers come from
Contact times, magnitudes, obscurations and Sun altitudes are computed from the official NASA/GSFC Besselian elements for this eclipse (Fred Espenak) and cross-checked against independent published predictions; they agree to within a few seconds. Times shown are converted from fixed UTC instants into each city's local time. “Eclipse Predictions by Fred Espenak, NASA's GSFC.” This is a reference and planning tool — verify critical timings independently before travelling.
NASA/GSFC Besselian elements · Espenak · ΔT 71.7 s bridges UT and TDT (greatest eclipse 10:06:38 UT, not the 10:07:49 TDT some sources quote) · agrees with independent predictions within a few seconds.
Every figure on this page is lifted from Eclipse 2027: Local Times’s own shipped table by a script, and a test re-reads the app’s source to prove each one before this page deploys. Nothing here was written for the web.