From Halopedia, the Halo wiki
2590 was a year in the 2590s in the 26th century.
These are events that are based around this year, and may not fall on this year specifically.
5 years prior to Niraj Shah visiting the site
- There is a ceremony for John-117 in an undisclosed location near one of the locations of the Battle for Earth. However, his coffin is empty.