When will Old Testament saints be judged?

Just after the sounding of the seventh trumpet in heaven during the the time of the Tribulation on earth, Scripture says that the time has come for the dead to be judged and for God to reward His servants the prophets, the saints, and them that fear His name, small and great.  This is in Revelation 11:18 just after the two witnesses have just been killed, resurrected, and called up to heaven. In the slides The Two Raptures, it was I argued that this is the time of the partial rapture of Tribulation saints along with resurrection and transport to heaven of the Old Testament righteous who will serve in the Millennial Kingdom.

Serious Bible scholars argue that the judgment mentioned in Revelation 11:18 is not a judgment at this time in the narrative sequence, but rather a look from a future time backward at the Great White Throne Judgment, which will occur after the Millennial Kingdom and just before a new heaven and earth are prepared. The slides Time to Reward God’s Prophets evaluate the arguments for and against such a discontinuity in the narrative of future events in the Book of Revelation. As such this study will give us some insight into God’s judgments and help us to understand the sequence of events which must shortly come to pass. (Re 1:1)