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Introduced with Armed Assault version 1.001.00
Effects of this scripting command are not broadcasted over the network and remain local to the client the command is executed on
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Sets mission date and time. This command is fully JIP compatible (as of Arma 3 v1.93.145588). Players joining after mission start will get the current server date including the year.

While it seems that when setDate is executed on the server it propagates to clients, this could be the result of other synchronizations performed by the engine. The command has local effect and this hasn't changed. In order to globally change the date in the middle of the mission, use remote execution:
[[2001,6,22,12,0]] remoteExec ["setDate"]


setDate [year, month, day, hour, minute]
[year, month, day, hour, minute]: Array
Return Value:


Example 1:
setDate [1986, 2, 25, 16, 0]; //(4:00pm February 25, 1986)
Example 2:
Set real date: //postInit = 1; if (isServer) then { waitUntil {time > 0}; [missionStart select [0,5]] remoteExec ["setDate"]; };

Additional Information

See also:


Only post proven facts here. Report bugs on the feedback tracker. Use the Talk page or the Forums for discussions.


10:00, 7/12/2010 (BST)
This command sets the date for the southern hemisphere only, i.e. when the map is in northern hemisphere a date [2010,12,7,17,0] is in day light and and date [2010,6,7,17,0] is in darkness.
21:35, 31 October 2011 (EET)
In multiplayer, the effect of this command is local, not global. The date from the server is synchronized with clients when they join the game (including start of the mission and joining in progress). E.g. if this command is executed on server in the init.sqf before the mission starts, every client will be synchronized with server as mission is started. However, if you run this command in the middle of the mission, effect is local.

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Posted on October 4, 2014 - 17:43 (UTC)
Since an unknown version of ARMA 3, this command now has global effect when executed on the server.
Posted on February 5, 2015 - 06:38 (UTC)
Arma 3 1.38.128937- Leapyear BUG - setdate [2016,12,31,23,59] yields an ingame date of the 1st of January 2017. If left to tick over from the 30th of December it ticks to 1st January skipping the 31st of December entirely.
Posted on April 23, 2017 - 02:58 (UTC)
Regarding execution in the middle of a session, the post of MulleDK13 is not entirely true. If you don't change the year, you are perfectly fine when executing the command on the server only. However, the server does not sync the year. Hence, if you do change the year, you have to execute the command on the server, clients and JIP to account for the missing sync. e.g.
[[], {setDate [1986, 2, 25, 16, 0]}] remoteExec ["call",0,"JIP_id_setDate"];