Halocho #1833 - What is a Chagiga?

In the time of the Bet Hamikdash (may it be rebuilt speedily in our days) all men above Bar Mitzva have a Mitzva to appear in the Bet Hamikdash thrice yearly; during the Yom Tov of Pesach, Shavuoth and Sukkoth.

This Mitzva includes offering 2 sacrifices; a קָרְבָּן רְאִיָּה ("appearance sacrifice") which was completely burnt, and a קָרְבָּן חֲגִיגָה ("festive sacrifice") which was eaten.

These sacrifices cannot be offered on Shabbat.

Preferably this Mitzva should be fulfilled on the first day of each Yom Tov. If the first day of Yom Tov is Shabbat, or if the person has other reasons to delay, then the Mitzva can be done during the remaining days of Sukkoth and Pessach.

Even though Shavuoth is only one day long (in Israel) this Mitzva can also be fulfilled during the 6 days following Shavuoth. This is the reason why some congregations do not say Tachanun during the entire week following Shavuoth.

Source: The Book of our Heritage, Vol III, Page 50

- Danny
Sunday, 3 Sivan 5777 - 47th day of the Omer