This command:

 /summon minecraft:area_effect_cloud ~ ~ ~ {Duration:630720000}

... summons an invisible marker entity that (supposedly) won't disappear for a year (real life time.) I want to know if this will exceed the maximum Duration that an area_effect_cloud can last (if any).

1 Answer

The Duration tag of an AEC is an Integer, that means that its maximum value is 2147483647.

Everything above will wrap around, so for example Duration:4294967297 becomes Duration:1. You can test this by setting it to 2147483647 or 2147483648 and then checking its NBT data with /data get entity @e[type=area_effect_cloud,sort=nearest,limit=1] Duration.

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