When minyanim closed, I started davening vatikin (starting Shemoneh Esrei (=SE) at hanetz hachama (sunrise=netz)). If I do not know precisely when netz is, is it better to err on the side of starting SE before or after netz?
I thought that at Ma’ariv of Rosh Chodesh (or other times there is something new to say), the gabbai calls out “Ya’aleh V’Yavo” (=YVY) before Shemoneh Esrei. But in many shuls, someone just bangs. Which way is correct?