0 januaryの例文

例文

1. In the introduction to Newcomb's Tables of the Sun ( 1895 ) the basis of the tables ( p . 9 ) includes a formula for the Sun's mean longitude, at a time indicated by interval T ( in Julian centuries of 36525 mean solar days ) reckoned from Greenwich Mean Noon on 0 January 1900:
2. But, standard conventional epochs which are not Besselian epochs have been often designated nowadays with a prefix " J ", and the calendar date to which they refer is widely known, although not always the same date in the year : thus " J2000 " refers to the instant of 12pm ( midday ) on 1 January 2000, and J1900 refers to the instant of 12pm on 0 January 1900, equal to 31 Dec 1899 . It is also usual now to specify on what time scale the time of day is expressed in that epoch-designation, e . g . often Terrestrial Time.