Can the anniversary of the death of the elderly at home be postponed?

Let's first look at whether it is calculated according to the lunar calendar or the solar calendar. It is best to calculate at the same time, otherwise there will be a time difference.

If it is buried according to the date of death, it is best; However, it depends on human effort, because of special reasons, we can't bury the anniversary, as long as it doesn't exceed 7 days.

When we treat our ancestors, we pay attention to one heart. As long as we are filial and sincere, everything else is secondary.