Yes, a date can be changed at Cebu Pacific. But changing a date could be subject to a penalty, and that could be determined by airfare and routes. Still, you get to change, then you can contact the airline on call and the phone number. Besides this, you can use th online process mentioned at the bottom:-

• Head to Cebu Pacific's official site

• Afterward, click on the manage booking portal

• Further, mention your surname with the confirmation code

• Now, choose date change options for the dashboard

• After that, select a date and pay the cost with a fare difference

• Then, an updated fare could be received in registered emails. 

Read Also: How do I connect to Cebu Pacific?