Each record sits in this year because its source places it here, or because a conversion of the source’s date, stated on the record, does. That is a placement, not a settled date, and not a complete account of the year. “No region assigned” means the collection has not fixed where the act took place. How to read a record
The Zizhi tongjian places Cui Zuoshi's arrival at Yangjumie, the Yunnan ruler's capital, in its first-month sequence.
Limits: Wikisource raw revision 1502865. Arrival is explicit, rather than merely a proposed mission. The following narrative describes his reception and resistance to entering in local clothing; no separate arrival day is supplied.
Source: Zizhi tongjianRead the source
The annals report that a large synod of bishops from Gaul, Germany, and Italy assembled at Frankfurt in the presence of Charlemagne and Pope Hadrian's envoys.
Limits: Pinned Wikisource revision 264822. Frankfurt is established by the immediately preceding Franconofurt and ibique. The passage does not give the synod's exact date or identify its meeting as occurring on Easter itself.
Source: Annales regni FrancorumRead the source