Saturday at sundown
Look it up on the internet under Shabbat.
It depends where you are, as the time of Shabbat depends on the time the sun sets. Chabad has a very useful online Shabbat calculator that allows you to enter your exact location and will then work out the time of Shabbat, Shabbat candle lighting and other important times for you. You can also visit the related link which will automatically find what time shabbat begins in your location.
Friday at sundown
Saturday at sundown
It's the time of the evening when shabbat ends.
Shabbat is very important because it gives you a chance to rest. In Rabbinical Times, the sabbath (Shabbat) was important for everybody, because everybody worked every other day. Shabbat is also a time for connection to God, and to find spiritual meaning, as well as a time for family and friend to get together. Me, being Jewish, and many Jews find that Shabbat is a great time to go over the weeks' events and to remember who you were kind to, and who you weren't.
Shabbat ends in New Jersey on Saturday at sunset. You can check the specific time for today by looking up the sundown time in your location.
Orthodox Jews will answer phones pretty much as soon as Shabbat is over. They might wait until they're outside of shul (synagogue) before doing so if it's their cell phone though.
There is no meal in Judaism designated as the last meal of the Sabbath. Shabbat is a time of enjoyment and plenty, and all of the meals served during Shabbat are special.
You can check the exact passing time of the space station over Concord, CA tonight by visiting websites like spotthestation.nasa.gov or using smartphone apps like ISS Tracker. The passing time can vary, so it's best to check closer to the time you want to see it.
Yes, tonight is an adverb. It is an adverb of time (point in time).
Tonight at 7:00 pm.