Circadian Technologies, Inc.
MidnightSun Experts in Extended Hours

MidnightSunTM 2.0

Be at your best wherever you travel. MidnightSun is an advanced tool for maximizing your performance and health by helping you rapidly adapt your sleep-wake cycle to any place on the planet.

The key is controlling your exposure to light. MidnightSun tells you when to seek light and when to avoid being exposed to light.

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Normal Wake-Up Time at Home 

Normal Bedtime at Home             


For information on this program, please use our contact form.

The scientific basis for resetting the sleep-wake cycle by light is fully described in "The Clocks That Time Us: Physiology of the Circadian Timing System" by Moore-Ede, MC. Sulzman FM and Fuller, CA, Harvard University Press, 1982. The original development of MidnightSun is described in MidnightSun: Software for Determining Light Exposure and Phase-Shifting Schedules During Global Travel by Houpt, TA, Boulos, Z, and Moore-Ede, MC, Physiology & Behavior, Vol. 59, 561-568, 1996.

Copyright (C) 2003 All rights reserved

Warning: this computer program is protected by copyright law and international treaties. Unauthorized reproduction or distribution of this program, or any portion of it, may result in severe civil and criminal penalties, and will be prosecuted to the maximum extent possible under law.





Plan your sleep and exposure to light to minimize jet lag and maximize performance.

© Circadian Technologies, Inc. 2003. It is illegal to reproduce any content without prior consent.