Is It Permissible to Visit the Graves of Tzaddikim at Night?

Greetings, Indeed, some are stringent not to visit graves at night, especially in the early hours of the night (see the Admor of Monkach, of blessed memory, in the book Divrei Torah MeHaDoro HaTelita, section 44). However, it is the widespread custom to visit the graves of tzaddikim at night, even in the early hours (see the book Netivei Gavriel, Avelut, part 2, chapter 22, section 10. There, in note 21, he cites that the Gaon Rabbi Yitzchak Yaakov Neiman, may he live many years, the rabbi of the Belz Chassidim in Montreal, wrote to him that he heard that the Admorim who would visit graves in Poland and Russia did not maintain the stringency of refraining from visiting at night). Wishing you Bsorot tovot, Hillel Meirs