As you are aware the incidence of  various  circadian disorders   are growing fast in all the populations world over and India is  also facing this problem because of changing work culture and living pattern. Most of These disorders are  preventable and well manageable. We all are aware of the importance of time. We know that the earth   revolves on its axis and it also makes a circle of sun, which  has   the basis for day and night. Even our body has its own circadian clock  and various  cells have their own clocks . The whole circadian  Rhythm is very complex and  we are still searching the answers for many questions unanswered. Recently this Rhythm has been studied in relation to metabolic diseases and newer horizons are opening up in management of various  chronic diseases. Human activities in modern world do not stop 24 hours.  Insomnia is shown to induce glucose intolerance and dyslipedemia, chronic circadian rhythm disturbances and “eveningness” in life style which may lead to metabolic syndrome. It is important for all ages to have active daytime and restful night time in order to keep healthy life. .As a fulfillment of these objectives ISC will cover wide range of topics on  Circadian Rhythm to facilitate better understanding of the disease process.