simultaneous
US /ˌsaɪ.məlˈteɪ.ni.əs/
UK /ˌsaɪ.məlˈteɪ.ni.əs/

1.
simultaneo, contemporaneo
occurring, operating, or existing at the same time
:
•
The two events were simultaneous.
I due eventi erano simultanei.
•
They made simultaneous announcements.
Hanno fatto annunci simultanei.