As a smaller variant of cron, this script will execute the command:

llOwnerSay("TIME!");

every day around 0:00 SLT.

///////////////////////////////////////////////////////////////////////////
//  Copyright (C) Wizardry and Steamworks 2014 - License: GNU GPLv3      //
//  Please see: http://www.gnu.org/licenses/gpl.html for legal details,  //
//  rights of fair usage, the disclaimer and warranty conditions.        //
///////////////////////////////////////////////////////////////////////////
default
{
    state_entry() {
        llSetTimerEvent(
            86400 - llGetWallclock()
        );
    }
    timer() {
        llSetTimerEvent(0)
        state send;
    }
    on_rez(integer start_param) {
        llResetScript();
    }
}
 
state send {
    state_entry() {
        llOwnerSay("TIME!");
        llSetTimerEvent(60);
    }
    timer() {
        llResetScript();
    }
    on_rez(integer start_param) {
        llResetScript();
    }
}