3个星期很可信，因为官网是这么写的
Unable to attend the ceremony and certificate delivery options
If you are unable to graduate in person, select ‘In Absentia’.
You will choose one of three options for the delivery of your graduation certificate.
You can collect your certificate from three weeks after the ceremonies have finished.
You can nominate someone else to collect your certificate after the ceremonies. You must add the name of the collector to the form. Your collector will need to bring identification. You must also provide an email address for correspondence as the Graduation Office will confirm when your certificate is ready to be collected.
You can also have your certificate couriered for a charge.作者: 骑驴追火箭 时间: 2014-8-1 19:40:39
GRADUATION OFFICE给我的回复The next opportunity to graduate in absentia is 18 August, through a Meeting of Council. If you would like to graduate and receive your certificate at that meeting, please complete and return the attached form. Please note, the closing date for applications is this Monday, 4 August. Please ensure you return your application form to us by 5pm on Monday, as late applications will not be accepted and the next opportunity to graduate after that Meeting will be 30 September.
By graduating in absentia at a Meeting of Council, you will not be able to attend a ceremony for the same qualification in the future. Your certificate will be available approximately 1 - 2 weeks after the Meeting of Council has taken place.