OK, I think I have the chronology worked out, and that will help everyone finalize seasonal activities logs.
Patrick arrived at almost the same time as the member magi, in Spring, 1226. That gives him time to putter around in the caves and then go out exploring the delta in the same season.
Viola's journey with Calliope happens in Autumn, 1227. In the "Correspondents" thread there are six letters from Calliope and five from Viola; there's one more from Calliope in the "Palace" story (and presumably an unrecorded one from Viola before that one). The Redcaps are supposed to visit Nova Casta with extra frequency, so we can assume one exchange per season (that means writing each new letter while the Redcap rests); that would place the journey Winter, 1227, but that season is no good for travel. Tasia, however, was traveling to Constantinople twice a season while she was present, which could speed things up a bit.
The process of constructing a new story for Halia would therefore begin in Winter, 1228.
The "Barrows" also happens in Winter, 1228, to allow time for Fray's arrival.
We'll deal with the caves story in Spring, 1228, which will allow the introduction of new players and characters, ifeveryone is agreeable.
In the "meanwhile" department, I'm going to assume that Viola investigated the hypocaust in Spring, 1226, and the Perdo vis source in Summer, 1226, since these are the two most urgent tasks. My one remaning question: did she need to investigate the statue of Poseidon (or otherp arts of the regio) for a season to come to the conclusion that the temple needed to be rededicated?
Scott
[Edited to reflect a point that Salutor raised in a post that's now been moved into "Covenant Development".]