Some say 5 kapitlach a day. (But not on Shabbos. Though I think there are those who say it on Shabbos as well.)
I was in KJ this week and indeed saw that it is 5 a day except Shabbos and YT. I found it rather odd that RH & Yom Kippur are also excepted - in Lubavitch we say as much Tehillim as possible those days.
What is the source for these 5 per day? Why not stick to the standard חלוקה לימי החודש? Why not on Shabbos and YT?