Answer:
If the day before yesterday is the 23rd, then what is the day after tomorrow.
I am a king but also a common device of measure. What am I?
What is always coming but never arrives?
They come in many varieties: Red, Black, Dead, and Caspian to name a few.
A standard dimension for sandwiches and rulers
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.