The Prophet ﷺ described the last third of the night as when Allah descends closest to His servants. Find tonight's exact Tahajjud window for your location.
Recommended Tahajjud window (last third of the night)
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Isha tonight
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Night midpoint
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Fajr tomorrow
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The night is measured from Isha to next Fajr and split into three equal parts; the last third is the classically recommended Tahajjud window.