Hallel of the Seder

From Halachipedia
  1. Hallel starting from the paragraph of Lo Lanu is recited over the fourth cup of wine.[1]
  2. It’s permissible to say Hallel seated, however, it’s praiseworthy to stand while saying Hallel. [2]
  3. One should be careful to finish Hallel and drink the forth cup before Chatzot (halachic midnight), however, if one delayed one may make the bracha of Yehalelucha following Hallel. [3]

References

  1. S"A 480:1
  2. Chazon Ovadyah (vol 2, pg 59)
  3. Chazon Ovadyah (vol 2, pg 124)