Ascension Day is an echidnan holiday, likely celebrating the day the Floating Island rose from the sky and escaped devastation in the Light Mobius zone. (StH: #143)
- It is unknown at what exact day Ascension Day takes place. Though, a doctor says when Locke is dying that he will likely not make it to Ascension Day, and he passes on sixty-first day of the year. If the doctor was right, Ascension Day likely takes place somewhere soon after this date.