# The proper place for the recital of Hallel is immediately after [[Shacharit]]. This is true even on a day that we recite [[Musaf]] and technically [[musaf]] should be recited first since it is said more often and tadir visheayno tadir, tadir kodem (the item said performed more often should precede the less common). <ref> Sh"t Iggerot Moshe 3:70. Shulchan Aruch Harav 131:5 says that the reason is that zrizim makdimin limitzvot, that we are eager to fulfill mitzvot as early as possible. Sh"t Yaskil Avdi 8:20:55 writes that Hallel is a continuation of Yaaleh Viyavo and also that by saying Hallel in the place where [[Tachanun]] is usually recited, it is a proclamation of respect for this exalted day. </ref>
# Hallel should be recited during the day and not at night. <ref> Gemara Megilla 20b based on the pasul “From when the sun rises in the east until it sets, shall Hashem’s name be praised. ”</ref>
# Hallel should be recited while standing<ref> Shulchan Aruch 422:7. Mishna Brura 422:28 says that we recite hallel standing since Hallel testifies to Hashem’s miracles and wondrous deeds, and testimony must be made while standing.</ref> Some say that during hallel one shouldn't lean on a shtender in a way that one would fall if the shtender was removed.<ref>Magen Avraham 422:11 says that one shouldn't lean on shtender in a way that one would fall if it was removed. Biur Halacha 422:7 s.v.
meumad questions this.</ref> Someone who recited Hallel while sitting need not repeat it <ref> Mishneh Brurahh 422:28, quoting Pri Megadim. </ref>
# If someone misses a word or sentence he must return to the place he omitted <ref> Rama 422:6 </ref>