Index

Antipodes Map
 
Fig1&2
Determining the time and date of a place using the Chronographometer

        The hours of "Today" and the remaining hours of "Yesterday" add up to make the "live" 24hr. time spectrum of the moment that is varifiable by radio waves. "Today" / "Yesterday" are differentiated below the midnight (0/24) countdown point on the clock-face.
        As shown in the diagram (fig.1) "Today" (30.11.2009) is coloured pink from the countdown point eastwards to the date line and "Yesterday" (29.11.2009) is coloured blue from that point westwards to the date line. Thus the clock shows 15hrs. of "Today" and 9hrs. of "Yesterday" totaling 24hrs. of "live" time at GMT. 3hrs. (London)
        After 9hrs. "Today" completes 24hrs. having "pushed" "Yesterday" into history. At this moment in time, GMT. 12hrs. (London), the whole earth has a single date (30.11.2009) as shown in (fig.2).
        1 second after that countdown moment the date line forges into "Tomorrow" which becomes the new "Today" (1.12.2009) and the previous "Today" is relegated to "Yesterday" (30.11.2009). (fig.3) illustates this at GMT. 15hrs. (London), showing "Today" with 3hrs. and "Yesterday" with 21hrs. to go. Thus "Today" advances foward with time while "Yesterday" recedes into history.
        Hence by imagining the date line judiciously superimposed onto the Chronographometer at the correct moment, the time and date of any place can be visually determined. (see figs. 1, 2, 3 and 4)

fig3&4
2nd page
extra page
Watches
Watches
know the time and date of any place on earth
National Geographic



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