Texas Almanac, 1968-1969 Page: 44
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44 TEXAS ALMANAC-1968-1969
Morning, Evening Stars,
1968, 1969
Morning Stars, 1968
Mercury.-Feb. 15-April 24; June 18-Aug.
7; Oct. 15-Dec. 7.
Venus.-Jan. 1-June 20.
Mars.-June 21-Dec. 31.
Jupiter.-Jan. 1-Feb. 20; Sept. 9-Dec. 31.
Saturn.-April 5-Oct. 15.
Uranus.-Jan. 1-March 17; Sept. 22-Dec. 31.
Neptune.-Jan. 1-May 16; Nov. 18-Dec. 31.
Pluto.-Jan. 1-March 12; Sept. 15-Dec. 31.
Evening Stars, 1968
Mercury.-Jan. 1-Feb. 15; April 24-June
18; Aug. 7-Oct. 15; Dec. 7-Dec. 31.
Venus.-June 20-Dec. 31.
Mars.-Jan. 1-June 21.
Jupiter.-Feb. 20-Sept. 9.
Saturn.-Jan. 1-April 5; Oct. 15-Dec. 31.
Uranus.-March 17-Sept. 22.
Neptune.-May 16-Nov. 18.
Pluto.-March 12-Sept. 15.
Morning Stars, 1969
Mercury. -Jan. 29-April 8; May 29-July
22; Sept. 29-Nov. 16.
Venus.-April 8-Dec. 31.
Mars.-Jan. 1-May 31.
Jupiter.-Jan. 1-March 21; Oct. 9-Dec. 31.
Saturn.-April 18-Oct. 29.
Uranus.-Jan. 1-March 22; Sept. 27-Dec. 31.
Neptune.-Jan. 1-May 18; Nov. 20-Dec. 31.
Pluto.-Jan. 1-March 14; Sept. 18-Dec. 31.
Evening Stars, 1969
Mercury.-Jan. 1-Jan. 29; April 8-May
29; July 22-Sept. 29; Nov. 16-Dec. 31.
Venus.-Jan. 1-April 8.
Mars.-May 31-Dec. 31.
Jupiter.-March 21-Oct. 9.
Saturn.-Jan. 1-April 18; Oct. 29-Dec. 31.
Uranus.-March 22-Sept. 27.
Neptune.-May 18-Nov. 20.
Pluto.-March 14-Sept. 18.
Eclipses, 1968 and 1969
1968
There will be four eclipses in 1968, two
of the Sun and two of the Moon.
March 28-29.-Partial eclipse of the Sun,
invisible in North America; visible south-
ern tip of South America, Pacific Ocean
and Antarctica.
April 13.-Total eclipse of the Moon, be-
ginning visible in North America except
northwestern part of Alaska, visible in
Europe, most of Africa, Atlantic Ocean,
South America, southeastern part of Pa-
cific Ocean and Antarctica; end visible in
North America, Atlantic Ocean except
southeastern part, northwest coast Africa,
South America, Pacific Ocean except west-
tern part, New Zealand and Antarctica.
Sept. 22.-Total eclipse of the Sun, vis-
ible Canada, Iceland, Greenland, Europe,
northeastern Africa, most of Asia, Arctic
region.
Oct. 6.-Total eclipse of the Moon, be-
ginning of penumbral phase visible in
North America, western half South Amer-
ica, Pacific Ocean, most of Australia, New
Zealand, northeastern Asia, Arctic regions;
end visible in northwestern North America,
Pacific Ocean except southeastern part,
Australia, New Zealand, most of Indian
Ocean. Asia except western part, and Arctic
regions,.
1969
There will be five eclipses in 1969, two
of the Sun and three of the Moon.
March 18.-Annular eclipse of the Sun,
invisible in North America; visible eastern
Asia, Australia, Antarctica and western Pa-
cific Ocean area.April 2.-Penumbral eclipse of the Moon,
the beginning visible in the western part
of the Pacific Ocean, Asia, eastern Eur-
ope, eastern half of Africa, Indian Ocean,
Australia, New Zealand and Antarctica;
end visible in Asia except extreme north-
eastern part, most of Australia, Indian
Ocean, Africa, Europe, Atlantic Ocean except
western part and Antarctica.
Aug. 27.-Penumbral eclipse of the
Moon, the beginning visible in North Amer-
ica except extreme northeastern part, the
western half of South America, Pacific
Ocean, northeastern coast of Asia, Aus-
tralia, New Zealand and Antarctica; end
visible in North America except northeast-
ern part, Pacific Ocean, east coast of Asia,
New Zealand and Antarctica.
Sept. 11.-Annular eclipse of the Sun,
visible North America except northeastern
part, South America, eastern Asia.
Sept. 25.-Penumbral eclipse of the
Moon, beginning visible in Asia, western
Pacific Ocean, Australia, New Zealand, In-
dian Ocean, Africa except northwestern
part, Europe except western part and Arc-
tic regions; end visible in Asia except east-
ern part, Indian Ocean, Africa, Europe, At-
lantic Ocean, South America except west-
ern part, extreme northeastern part of
North America and Arctic regions.
The Seasons, 1968
The seasons of 1968 begin as follows,
Central Standard Time: Spring, March 20,
7:22 a.m.; Summer June 21, 2:13 a.m.;
Autumn, Sept. 22, 5:26 p.m.; Winter, Dec.
21, 1:00 p.m.
The Seasons, 1969
The seasons of 1969 begin as follows,
Central Standard Time: Spring, March 20,
1:08 p.m.; Summer, June 21, 7:55 a.m.;
Autumn, Sept. 22, 11:07 p.m.; Winter, Dec.
21, 6:44 p.m.
Duration of Twilight
There are two definitions of twilight.
Calculations assume a clear sky. (1) Tech-
nical twilight as defined in the Nautical
Almanac is the period from first light in
the sky until sunrise (or from sunset until
last light). At Texas latitudes this period,
morning and evening, varies from a mini-
mum of 1 hour, 22 minutes, to a maximum
of 1 hour, 42 minutes. Civil twilight is the
twilight of broad daylight, varying only
from 28 to 31 minutes during the year. It
is calculated by the tine it takes the Sun
to traverse the distance between the hori-
zon and a point 6 degrees below the hori-
zon, morning and evening. Below is given
approximately for Texas latitudes the dur-
ation of civil and technical twilight for se-
lected dates, any year. (See table on fol-
lowing pages for time of sunrise and sun-
set):Date-
Jan.
Feb.
Mar.
April
May
June
July
Aug.
Sept.
Oct.
Nov.
Dec.Duration, a.m. & p.m
Civil Technical
21.........30 min. 1 hr. 26 min.
21.........29 min. 1 hr. 23 min.
21.........28 min. 1 hr. 22 min.
21.........29 min. 1 hr. 26 min.
21.........31 min. 1 hr. 35 min.
21.........31 min. 1 hr. 42 min.
21.........31 min. 1 hr. 38 min.
21.........29 min. 1 hr. 29 min.
21.........28 min. 1 hr. 22 min.
21.........29 min. 1 hr. 23 min.
21.........30 min. 1 hr. 26 min.
21.........31 min. 1 hr. 29min.
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Texas Almanac, 1968-1969, book, 1967; Dallas, Texas. (https://texashistory.unt.edu/ark:/67531/metapth113809/m1/46/?q=%221964~%22: accessed August 15, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting Texas State Historical Association.