Dates are given as exactly as possible, and events are ordered by year and month. I have sometimes guessed the month where it is possible to do so with reasonable accuracy (for example when an event has been reviewed but no date given). Where no date is given, it should not be assumed that the date is entirely accurate. An exact date indicates that the date of the event is known (with a very few exceptions, where I have noted the fact in italics).

Where only the year is known, items are placed at the start of the relevant year. Such events are likely to have occurred later than at least some of the items placed subsequently with a specific date. I would welcome information that would enable me to place these items more accurately.

Events that occurred over more than one month are normally given under the start month.