When does voting take place once an initiative is qualified for ballot?

National Election Office (website)

http://valasztas.hu/en/ovi/219/219_9.html

After having received the notification of the Head of the National ElectionCommission, the next session day the Speaker of the Parliament announces theinitiation. If the number of the valid supports reaches 200 000, theNational Assembly must order the referendum within 30 days. If the number ofthe valid supports is between 100 000 and 200 000, the National Assemblyhas the power to decide on ordering the referendum or not. The resolution ofParliament on ordering the referendum shall be published in the HungarianGazette (Magyar K?zl?ny).