The customs, or minhagim and prayer services are based on Lurianic kabbalah.
General Chabad customs, called minhagim, distinguish the movement from other Hasidic groups.
Major holidays include the liberation dates of the leaders of the movement, the Rebbes of Chabad, others corresponded to the leaders' birthdays, anniversaries of death, and other life events.
The leaders of the Chabad movement were, at times, subject to imprisonment by the Russian government.
The days marking the leaders' release, are celebrated by the Chabad movement as "Days of Liberation" (Hebrew: יום גאולה (Yom Geulah)).