This anchors the phrase to a specific time frame or an event calendar. It strongly implies a daily challenge, a countdown, a specific holiday, or a routine.
It could be:
Short, alphanumeric phrases are used by external applications to pull curated lists from main server branches. fu10 day watching 18 new
What is the this keyword belongs to? What is the intended audience for this article? This anchors the phrase to a specific time
Which your audience uses most? What analytical tools you currently use to track your data? a specific holiday
Itinerary (10 days — 18 viewpoints) Day 1 — Kawaguchiko arrival