As you can see from the screenshot, I am missing date and time from top menu. Is it stupid april fools joke or...?

I am clueless how to put it back. Any help would be appreciated.
EDIT
Tried the proposed solution from the comments:
sudo apt-get install indicator-datetime
gives me:
indicator-datetime is already the newest version.
when i paste as normal user the command for the clock:
janipav@janipav-energy:~$ /usr/lib/indicator-datetime/indicator-datetime-service
gives me
bash: /usr/lib/indicator-datetime/indicator-datetime-service: No such file or directory