I couldn’t verify anything specific for “wincati” from the available information. The closest relevant public schedule I found is for HSK-style Chinese proficiency exams, where one center lists the registration deadline as the point by which you can change the exam date, and it also says to bring the same ID/passport used for registration.

What this likely means

  • If you mean a Chinese script or Chinese proficiency exam through a center like WinCati, the safest assumption is that the exam date is accepted/changed before the registration deadline , not after.
  • The exact cutoff can vary by test center, so the local registration page or exam notice is the source that matters most.
  • A general Chinese test schedule for 2026 is published by the official Chinese test system, but it is not specific to WinCati.

Practical next step

Check the center’s own registration notice for:

  1. the exam session date,
  2. the registration deadline,
  3. whether date changes are allowed, and
  4. any ID/passport requirements.

Bottom line

For a WinCati-related Chinese exam, the most likely answer is: they accept or let you change the exam date up to the registration deadline , but I could not confirm WinCati’s exact policy from the available sources.