Dawn (Alot Hashachar)
Earliest Tallit and Tefillin (Misheyakir)
Sunrise (Hanetz Hachamah)
Midday (Chatzot Hayom)
Nightfall (Tzeit Hakochavim)
Midnight (Chatzot HaLailah)
A chassid creates an environment. If he does not, he had better check his own baggage carefully, to see whether his own affairs are in order. The very fact that he fails to create an environment should make him as broken as a splinter. He must demand of himself: What am I doing in this world?
Rabbi Sholom DovBer of Lubavitch (1860-1920)