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I believe NOE is a tag that the OE schedulers place on days to let the REAL schedulers know you don't belong to them yet since you are awaiting OE.
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I believe PB is a payback day that you are NOE UNusable either.
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Since you finish sims soon, they have only blocked the first week or so until you finish. Then, actual trips will be posted and you can look up the trips to see who you're going with.
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