Eho/恵方
lucky direction

You will find a word of "katatagae" lots when you read
Genji-Monogatari", the oldest novel in Japan written by Murasaki Shikibu who lived in the Heian period (794-1192).
"Katatagae" means " change the direction"
Now we Japanese don't care about directions at all, but in old time, we had always thought about them.
When we wanted to visit bad direction, first we forced to the different direction
then visited the destination.

In Western way, direction is devided into 16, but in old Chinese way
direction is devided into 24. So, there is a small equation to express the direction.

It taks the same sycle in every 5 years.