Use the course date as the reference
Two players in different time zones can have different local calendar dates while ORBIT still identifies the same daily course for them. For a comparison, write down the date attached to the trail or use its challenge link instead of saying only “today.” That removes ambiguity near midnight and makes the comparison understandable if someone opens the message several hours later.
Separate an active run from a new attempt
The date check occurs when a run starts. You do not need to plan around the obstacle pattern suddenly being replaced halfway through a run at midnight UTC. On a later retry, an ordinary unpinned daily selection can advance to the new date. If you are studying a specific course across the boundary, a dated invitation is the useful distinction to understand.
Recognize a pinned invitation
A valid daily challenge link contains an exact date. When the requested companion and Daily mode are available, the game can keep that invited course selected even when it is no longer the current daily date. Explicitly choosing a course or changing companion clears the incoming challenge context. If the trail seems not to have changed, check whether you arrived through a saved invitation before assuming the daily selection failed. Older links can also become incompatible when the course version changes, so retain the date as context rather than a promise of permanent replay.