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Detailed entries for one subject from the INDEX TO HOW TO DO IT INFORMATION.
Click on a see also (sa) or tracing (xx) to view detailed entries about a related subject.
The entries are in alphabetical order by magazine name and then in chronological sequence.
To obtain a copy of any magazine article contact your local public library or the publisher.

xx   CLOCK

Astronomical computer program, written in BASIC, is used to calculate local siderial time, altitude/azimuth, right ascension and declination.
ASTRONOMY Jun 1983 (v.11#6) pg. 48

What time is it? Two methods for telling sidereal time. (1) Computer program (written in BASIC) to calculate sidereal time. (2) Schematic for a 60.16428-Hz oscillator which converts an ordinary digital clock to operate on sidereal time with an accuracy of 5 seconds per year.
ASTRONOMY Feb 1987 (v.15#2) pg. 38
Added Info ASTRONOMY Jun 1987 (v.15#6) pg. 35
Added Info ASTRONOMY Jul 1987 (v.15#7) pg. 32

Build a "star time" clock. How to modify an inexpensive digital clock to display sidereal time. Est. cost: $25.
ASTRONOMY Mar 1988 (v.16#3) pg. 44
Correction ASTRONOMY Jun 1988 (v.16#6) pg. 37
Added Info ASTRONOMY Jul 1988 (v.16#7) pg. 8

Universal clock simultaneously displays sidereal time, standard (local) time and coordinated universal time (UCT) on an LCD screen. Est. cost: $15.
ELECTRONICS NOW Jun 1995 (v.66#6) pg. 37

Schematic for an accessory for the Heathkit digital clock, model GC-1005. This accessory injects four extra pulses for every 1,461 from the power line. Thus, the digital clock keeps time in "sidereal time" rather than solar time. Accuracy is better than two seconds per year. Est. cost: $10.
SKY & TELESCOPE May 1978 (v.55#5) pg. 433
Correction SKY & TELESCOPE Jul 1978 (v.56#1) pg. 67

Tips on how to grind the crystal in a digital clock to convert it to "sidereal time" instead of solar time.
SKY & TELESCOPE May 1978 (v.55#5) pg. 436

An easy, inexpensive electronic clock displays both sidereal and Universal time.
SKY & TELESCOPE Nov 1983 (v.66#5) pg. 453

Astronomical computing. (1) Greenwich mean sidereal time. (2) Altitude and azimuth. Written in BASIC.
SKY & TELESCOPE Jun 1984 (v.67#6) pg. 558
Added Info SKY & TELESCOPE Jul 1986 (v.72#1) pg. 70

A family of calculator clocks. Tips on converting electronic calculators into clocks to measure sidereal time, Julian days and fractions, solar hours, etc.
SKY & TELESCOPE Apr 1985 (v.69#4) pg. 361

Observing sidereal time. Sidereal time is easily determined by this simple device containing no optical parts.
SKY & TELESCOPE Feb 1986 (v.71#2) pg. 203
Added Info SKY & TELESCOPE May 1986 (v.71#5) pg. 516