Currently there is no way to store an approximate date in Musicbrainz. This applies to performance dates as well as artist birth/death dates.
The ticket above lists a couple of options for how to deal with them.
- “Recorded in the Italian Institute in Budapest from 21st to 23rd April, 1987”
- “c. June 1928”…“These recordings evidently took place from July to October 1928…”
Option 1: Circa checkbox
A single “circa” (or “approximate”) checkbox. This would indicate that listed date or dates are approximate:
In AR displays it would be:
- composer: Wolfgang Amadeus Mozart (classical composer) (circa 1787)
Option 2: a bunch of checkboxes
Six checkboxes: “circa”, “before”, “after” for each of start/end. This would give finer-grained details on any start or end date.