13 Days of EVE is an annual login campaign, which so far has been ran mainly through December starting in 2018.
Links to specific annual campaigns:
- 13 Days of EVE (2018), 2018-12-11 – 2018-12-28, partially overlapping with Operation Permafrost
- 13 Days of EVE (2019), 2019-12-12 – 2020-01-07, part of Naughty or Nice