begin morning civil twilight

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begin morning civil twilight

The period of time at which the sun is halfway between beginning morning and nautical twilight and sunrise, when there is enough light to see objects clearly with the unaided eye. At this time, light intensification devices are no longer effective, and the sun is six degrees below the eastern horizon. Also called BMCT.
References in periodicals archive ?
Establishing commercial operations in 1991, BMCT today employs more than 400 people and is headquartered in Gaithersburg, Maryland.
BMCT is a 100% arm of the PSA International subsidiary PSA Bharat Investments Pte Ltd.
We used the money from the BMCT to offer drama therapy classes to children of all ages.
Retavase becomes the newest offering in a diversified line of cardiovascular products developed by BMCT.
We used the money from the BMCT to hold parties for the children at Christmas time, we had face painting and balloon making, something to brighten up the lives of the children who are going through a very difficult time.
After building a drug development group, BMCT sales and marketing launched its first commercial product, ISMO for chronic stable angina, followed in 1994 by DEMADEX, a loop diuretic for the treatment of edema associated with congestive heart failure.
BMCT fundraising manager Gordon Creese said: "The Charity Trust is looking forward to working with the Malmaison and its staff to raise money for much needed funds for good causes.