Ichimoku makes only sense on a weekly chart, where 52 periods is 52 weeks (one year) and 26 periods is 26 weeks (a half year). I strongly believe this is why the Japanese inventor has defined 52 and 26 as default periods. And why it makes no sense to use it on a daily chart, because on a daily chart it is to me in the area of "how you want it to be". Because 52 days and 26 days are nothing which makes any sense. Compared to the obvious 1 year and 1/2 year cycles.