What practical signs should one use to know when to light Shabbat candles if one does not know the exact time?
Synopsis
The Mechaber provides three signs from the Gemara: sun on the treetops (clear day), roosters going to roost (cloudy day), and ravens sitting (in the field). The Aruch HaShulchan adds that in modern cities one should use a clock and calendar and light no later than half an hour before the published time.
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