Do you mean this in the sense of a prediction about a later time in the past? If so, say eg They were all going to be very late the night before last. We don't commonly make predictions about the past'.
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AnonymousThey all went to bed very late the night before. They all had gone to bed very late the night before.Both are correct. The first is in the past simple tense. The second is in the past perfect tense. The past perfect is a dependent tense. It requires a context in