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: http://www.space.vsi.ru/mestntimee.htm
Дата изменения: Sat Oct 14 21:05:10 2000 Дата индексирования: Mon Oct 1 22:02:46 2012 Кодировка: Windows-1251 Поисковые слова: m-a 17 |
How to calculate the local time in Russia.
For each place of Russia being on the longitude
l it is possible to indicate the true local solar time Ti; the local medium solar time MT; the local zone time Tp; the winter season time Tw; the summer season time Ts; the local star time S. Here are the formulas for those who need to transform one time into another:МТ = Тi + h,
МТ = UT + l,
Тp = UT + n,
Тw = UT + n + 1ч,
Тs = UT + n + 2ч,
S =s + MT (approximately),
where h - is an equation of time; n- the number of time zone, s - the star time in Greenwich midnight (the table of star time is given in astronomic calendars):
It is interesting to calculate when the real midday will being according the winter or summer time. The longitude of Moscow
l is equal 2/h 30 min. The medium solar midday is 12 o'clock of the local time (MT). It is corresponding UT = 12 h - 2 h 30 min = 9 h 30min of the universal world time according Moscow winter time - 12 h 30 min, according Moscow summer time - 13 h 30 min.