I have a multivalued field for session timings (where i store timestamps) of
groups document. e.g. session_timings: [1526882026, 1513882026, 1533882026
]. My sorting logic is the groups should be listed sorted based on their
upcoming session time.

For example, Group A has three session_timings = [1, 2, 5]. And Group B also
has three session_timings = [1, 6, 7]. If current timestamp is 3, then Group
A should come first because next session for Group A is on 5, whereas for
Group B its 7. Is this possible with solr sorting? Or do I have to use
another way to do this? Any help would be great.

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