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 1


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.

  • So, max is 4294967297? And, that's ticks, right? At 20t/s, that's about 6.8 years?
    – end-user
    Commented Oct 11, 2020 at 23:45
  • Sounds about right, I got similar numbers before once. Many NBT tags have a special value like 0, -1 or 2^31-1 that make them not tick down, but this one apparently not. So if you reply on AEC for command stuff for a long-lasting server, this should be a consideration. Or just use storage, nowadays. Commented Oct 12, 2020 at 0:05

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