The word linggo means both “week” and “Sunday” — in the latter case, it is written capitalized.
mga araw ng linggo
days of the week
days of the week
Use the word sa to say ‘on’ a certain day.
Sa Miyerkules
On Wednesday
On Wednesday
Sa Biyernes
On Friday
Sa Linggo
On Sunday
Darating sila sa Sabado.
They’re coming on Saturday.
They’re coming on Saturday.
Saan ka pupunta sa Martes?
Where are you going on Tuesday?
Nandito ka ba sa darating na Lunes?
Will you be here this coming Monday?
sa susunod na linggo
next week
May tao ba rito sa susunod na linggo?
Will someone be here next week?
Darating ba sila sa susunod na linggo?
Are they arriving next week?
Oo, darating sila sa susunod na linggo.
Yes, they will be arriving next week.