The photodissociation of doubly excited H{sub 2} has been experimentally investigated. Using the pulsed character of the incident synchrotron radiation, the time analysis of the atomic fragment fluorescence Balmer-{alpha} (H{sub {alpha}}) decay was used for identification of the fragments. The measured branching ratios of the H(3{ital l}) fragments at a given photon energy contain information about the dynamic behavior of the photodissociation. The states of the first Rydberg series, {ital Q}{sub 1}(2{ital p}{sigma},{ital nl}{lambda}), dissociating into H(1{ital S})+H({ital n}=3) lead almost to H(1{ital S})+H(3{ital S}) fragments; the state involved can be identified from the correlation diagram as the (2{ital p}{sigma}{sub {ital u}},4{ital d}{sigma}{sub {ital g}}) configuration. The photodissociating states of the second Rydberg series, {ital Q}{sub 2}(2{ital p}{pi},{ital nl}{lambda}), lead to H(2{ital p})+H({ital n}=3), the H({ital n}=3) fragments being a mixture of H(3{ital S}) and H(3{ital D}) in a ratio of about 2:1. In order to identify the relevant {ital Q}{sub 2} state, the energy ordering in the manifold of the molecular states dissociating into H{sup *}({ital n}=2) and H{sup *}({ital n}=3) has been established by calculating the whole dipole-dipole long-range interaction.