Bright Light Window
Seek at least 10,000 lux outdoor natural sunlight or a dedicated light therapy lamp immediately. This resets the suprachiasmatic nucleus (SCN) and halts endogenous melatonin production.
Today's Shift Target
-45m Shift24-Hour Circadian Flight Plan
(Day 1 of 8)Interactive biological timeline. Tap any block or scrub the cursor to inspect zeitgeber cues.
Bright Light Window
02:15 PM β 04:15 PM (2 hours duration)
Primary photic stimulation window immediately following the estimated core body temperature minimum (Tmin). Expose eyes to outdoor light without sunglasses for maximal phase advancing effect.
Light Seeking Window
02:15 PM β 04:15 PM
Get 10k+ lux sunlight. Crucial for resetting master clock SCN.
Light Block Window
04:30 AM β 07:15 AM
Wear blue blockers or dim indoor lighting to prevent backward shift.
Caffeine Hard Stop
10:00 PM
Ensures clearance of adenosine receptor antagonists before sleep.
Melatonin / Wind-down
03:00 AM (Optional)
0.3mg micro-dose ~4h before biological bed to accelerate advance.