^ ThatAs far as I know changing your server time also messes up your online time on a server.
I'm pretty sure nobody wants this just to show off some extra server up-time.
Correct me if I'm wrong.
root@vps278005:/home/ts/teamspeak3-server_linux_amd64# date --set="2016-23-04 23:31:59.990" && date --rfc-3339=nsfor linux, go to terminal
#first, stop the ts3 service
sudo service teamspeak stop
#set date back to let's say 23th April 2016
sudo date --set="2016-23-04 23:31:59.990" && date --rfc-3339=ns
#now start teamspeak service again
sudo service teamspeak start
#use same command as at step 2. but now put the correct current time and date.
sudo date --set="2016-12-05 22:07:59.990" && date --rfc-3339=ns
DON'T DO IT KIDS, IT WILL WRECK YOUR LIFE (your server)you should never change your system time. this is used to many critical applications.