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:ÌÒ = Òi + h,
ÌÒ = UT + l,
Òp = UT + n,
Òw = UT + n + 1÷,
Òs = UT + n + 2÷,
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.