The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
SKAO's[2] own SKA-Mid science-operations timeline places AA2 and the start of Science Verification at 2029, with AA* following in 2031. Only the year is given, so the pin takes the last day of 2029.
The companion SKAO[1] timeline for SKA-Low, which dates the matching AA2 stage two years earlier; read as a PDF in this run.
Something missing or wrong? Say it in your own words: a link that backs this pin up, a different start or end date and why, or a fact it lacks or gets wrong. The AI checks it against this pin's sources, searches for better ones, and adds any page that backs you up. The pin's own sources still count most.