How long is my certificate valid? (Validity Period of the Certification)
The validity period of the Certificate is one year (Before May 1, 2021)
The validity period of the Certificate will be three years (starting on May 1, 2021)
The validity start date of your Certificate will be 10 days after the date on which the Resolution by the Certification Entity is issued.
For more information, you can check the illustrative diagram: