Is it not allowed to do divination without adding time?

I don't need to watch the specific hours and minutes, and few people watch them. Even the year doesn't matter much. The most important thing is to look at the month and the day. Six hexagrams are based on the month and the day, because after a hexagram is shaken out, all hexagrams, including changes, are based on the month and the day, that is, the month and the day are related to any one or any combination, and so on.