Only just briefly seen and read this thread. In case it helps, and before they become difficult to obtain, here are the half-hourly weather observations (METARS) for the period around the accident. The ASN report (link courtesy of Glonass, post #5, above) is unable to pinpoint the actual landing time, but it was some time between 2015 LT and 2115 LT (1915Z - 2015Z).
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We don't yet know the landing time, or if it was off the first approach.
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FlightRadar doesn't shows the ATR, but if you look at it, there is almost a continuous flow up to 19:32 and then at 19:33 the frst go-around by an AZA E170 followed with the interruption of all approaches
So I would say that 19:32 is a good estimated landing time