[LEAPSECS] Schedule for success
Tony Finch
dot at dotat.at
Mon Dec 22 13:17:02 EST 2008
On Mon, 22 Dec 2008, Rob Seaman wrote:
>
> No. We have been using mean solar time formally since the 19th
> century, and informally since we woke each morning to light shining through
> the entrance of the cave.
Apparent solar time is not mean solar time. Remember that for a lot of
history we used rubber hours that varied according to the time between
sunrise and sunset. Mean solar time cannot be established without
reasonably accurate clocks.
Tony.
--
f.anthony.n.finch <dot at dotat.at> http://dotat.at/
LUNDY FASTNET IRISH SEA: SOUTH OR SOUTHWEST 4 OR 5, OCCASIONALLY 6 IN IRISH
SEA. MODERATE, OCCASIONALLY ROUGH IN LUNDY AND FASTNET. OCCASIONAL DRIZZLE.
MODERATE OR GOOD, OCCASIONALLY POOR.
More information about the LEAPSECS
mailing list