Definition of timeshifting
[time·shifting]
/ˈtīmSHiftiNG/

 

noun:

The action of using individually timed light exposure and light avoidance, sleep and napping episodes, and/or melatonin use to shift ones circadian rhythm more quickly to a new sleep/wake and light/dark schedule in order to reduce jet lag or adapt to a new work schedule, or reset their circadian rhythm to ensure peak performance when needed, or in preparation for medical treatment.