The time frame for taking an oath of office after your commencement date can vary depending on the specific requirements and regulations of the organization or position you are entering. There is no universal answer to this question, as it is determined by the policies and procedures of the organization, government agency, or institution you are joining.
In some cases, you may be required to take the oath of office on the same day as your commencement date, while in others, you may have a specific window of time, such as a few days or weeks, to complete this formal step. It is essential to consult the relevant authorities or human resources department of your organization to determine the specific deadline and process for taking your oath of office.