Talk:Platinum Dragon/@comment-69.71.175.111-20130226004009/@comment-5670466-20130226022832

Rainbow or Gold... http://www.2084.org/dragonvale/breeding-sandbox/

EBI=Epic Breeding Island... that is not upgraded and has the same breed time as the Cave. EBS (Epic Breeding Sanctuary) is the upgraded form of EBI and would have the reduced time.

I'm assuming with that time, you have at least one upgraded breeding area.