Revellers must register at least 48 hours before they can buy a ticket
Glastonbury fans are being reminded they only have one more day to register to buy tickets for the music event.
Anyone who wants to attend must have registered with organisers by Friday before they are allowed to obtain a tickets which go on sale on Sunday.
The ticketing system was introduced in 2007 to stamp out touting. Last year fans were given the chance to extend their registration for three years.
A spokesman for the event said the system was a "good, open scheme".
Revellers must allow at least 48 hours before they buy a ticket, which is why 2359 BST on Friday is the latest opportunity for registration.
The spokesman said the ticketing system had been a success because "we know all tickets are going to festival-goers".
If anyone is uncertain whether their previous registration is still valid, they are able to check online.
Customers can also participate in the Glastonbury deposit scheme, which allows the buyer to pay a £50 deposit which reserves them a ticket. The final balance can be paid at a later date.
Meanwhile, it has been revealed that Michael Eavis is planning to extend the current four-year licence to 2011.
It is expected that in 2012 the event will not take place to allow the Somerset site to recover.