C24 surrogate

When the child saw me looking at him, he bared his teeth at me. "I think you're also called ninth day."

My scalp tingled. "Don't have any ideas about me. This ninth day is different from your ninth day."

The child asked me, "What's different?"

I said, "That's a lunar calendar, and that's your solar calendar. We're not the same thing. "

The child gave a faint "oh" before muttering to himself