General:
* Pagdating ng paligsahan: This is the most direct translation and is appropriate for most situations.
* Kapag nagsimula na ang paligsahan: This emphasizes the beginning of the competition.
* Sa simula ng patimpalak: This also emphasizes the beginning, but is more formal.
Specific:
* Pagdating ng araw ng patimpalak: This specifies the arrival of the competition day.
* Pagdating ng mga kalahok sa paligsahan: This focuses on the arrival of the contestants.
* Sa oras ng patimpalak: This emphasizes the specific time of the competition.
The best translation depends on the specific context and the intended meaning.