Segment and Trait Time-to-Live Explained segment-time-to-live-explained
How trait time-to-live (TTL) interval affects segment membership.
Time to Live
TTL defines how long a site visitor remains in a segment after the last trait qualification event. TTL is set on traits and not on segments. Visitors fall out of a segment if they do not qualify for a trait before the end of the TTL interval. The default TTL for new traits is 120 days. When set to 0 days, the trait never expires. Set the TTL value when you create or edit a trait in the Advanced Options section of the trait creation interface.
1 Day TTL Explained
When setting the TTL to 1 day, the TTL timer starts the next day after trait realization, not counting the hours left in the trait realization day.
Audience Manager calculates TTL expiration for traits with 1 day TTL based on the following formula:
24 + (24 - Hour of the day the trait was realized, in UTC)