وَءَايَةٌ لَّهُمُ ٱلَّيْلُ نَسْلَخُ مِنْهُ ٱلنَّهَارَ فَإِذَا هُم مُّظْلِمُونَ ٣٧
And a sign for them is the night. We remove from it the [light of] day, so they are [left] in darkness.
Your location stays on this device and is only sent, rounded to about 1 km, to fetch the times.