Can you wear a self-winding watch on Shabbat?

Dear Rabbi, Today is Rosh Chodesh. What it is all about? What Jew people naturaly do this day? Please clear it to me. And please tell me in what chapter I will find it in HOLY TORAH. Thank You. Shamim

Jewish men put on tefilin during Chol Hamoed Pesach outside of Israel, but in Israel, Jewish men do NOT put on tefilin during Chol Hamoed Pesach. Why is there a difference? Thank you,

What is a webbed neck?

I have a question about a "vacht Nacht" does the baby have to be at the place where the seudeh is taking place? thanks