File in SRC that handle time (in game) ?

Hello, I can't find the file that handle time in src. In found in \src\pocketmine\network\protocol a file called SetTimePacket but I don't think it's this one. Also, is it possible with the new API to fully handle the time changing ? Thanks.

Edit : And how to schedule a repeting function without creating an other php file ? For example I create

"public function example(){}"

if , when the server is loading,I repeat it with

"$this->getServer()->getScheduler()->scheduleRepeatingTask(example(), 120);" it say that I'm calling an undefined function. Sorry I'm just a beginner ^^

First, in PHP, you must call $this->example() to call a function in $this, instead of, like java, calling it directly.

Second, you should put a Task object there. In a plugin, a PluginTask object is preferred. You can make a PluginTask referring to many examples.

So a plugin task is a function in an other file to resume ?. Thank you

No. A plugin task is something to be called. It is called in the server scheduler.

Thank you.