Megillah 3:6-4:1

Megillah 3:6

On Chanukah, they read the section of the offerings brought by the Tribal heads (Numbers 7); on Purim, they read “Amalek came” (Exodus 17); on Rosh Chodesh, ‏”On your new moons…”‎ (Numbers 28); on maamados, they read the Creation account (Genesis 1); on fast-days, they read the blessings and curses (Lev. 26). The curses are read without breaks - one person reads the entire section. On Mondays, Thursdays and Shabbos afternoon, they read the weekly Torah portion according to the regular order, but doing so does not affect the necessity to read them again on Shabbos morning. We read about special occasions on those occasions as per Leviticus 23:44, “Moshe declared the appointed seasons of Hashem to the children of Israel,” from which we infer that each section is to be read on the holiday that it discusses.

Megillah 4:1

The megillah may be read sitting or standing, by one person or by two reading together. In places where the practice is to recite a bracha after reading the megillah, one does so; where the practice is not to recite a bracha, one does not do so. Three men are called to the Torah on Mondays, Thursdays and Shabbos afternoon – no more and no fewer – and they do not read a haftarah from the Prophets. The first person called recites a bracha at the beginning of the reading and the last person recites a bracha at the end.