Just change the departure time on your resume. The new company pays attention to the certificate of separation, not the time. What the new company pays attention to is that you don't want to report to the new company, and the previous company didn't give you a formal certificate of resignation, which may lead to labor disputes between the new company and your previous company.

What the new company pays attention to is not your departure time, but the position suitable for the new company. Now that your application has been passed, you have been affirmed as a person and will not be affected by an irrelevant resignation.

Extended data:

There are no complete and clear provisions in the current laws of our country on the certificate of dissolution or termination of the labor contract issued by the employer. Only the "Regulations on Unemployment Insurance" promulgated by the State Council 1999 stipulates that urban enterprises and institutions should issue certificates of termination or dissolution of labor relations for unemployed people in time from the perspective of handling unemployment insurance registration and enjoying unemployment insurance benefits.

Article 99 of the Labor Law stipulates that if an employer recruits workers whose labor contracts have not been terminated and causes economic losses to the original employer, it shall be jointly and severally liable for compensation according to law. This has also triggered social discussions and voices, arguing that workers should hold a resignation certificate when they re-employment, and the original employer should issue a resignation certificate to the workers. Drawing lessons from international experience, in order to safeguard the order of the labor market and the rights and interests of workers, this law clarifies the legal obligation of the employer to issue a certificate of dissolution or termination of the labor contract.

Resigned employees can apply to the Human Resources Department for resignation certificate. The resignation certificate issued by the human resources department only proves the date of entry, position and reasons for resignation. Generally, employees who are dismissed fill in the dismissal certificate, not the resignation certificate.

Because there is no definite delivery unit for the resignation certificate, there is no need to write the name and address of the recipient, just the date of issuance of the certificate.

References:

Baidu Encyclopedia-Resignation Certificate