Welcome to the NavList Message Boards.


A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

Compose Your Message

Add Images & Files
    Re: A quarter-millennium of almanacs
    From: John D. Howard
    Date: 2017 Sep 14, 14:32 -0700


    I agree with you that in this day and age there is no need to print on paper the almanac.

    You said:  "I believe that early almanacs  gave the sun's RA, dec and EOT once per day (I stand to be corrected). In the early 1950s GHA and dec were tabulated for every hour. That is 24 times as much work for a document that was still being produced by human computers, albeit with the assistance of mechanical tabulating machines."

    I think you are about a decade off.

    During WW2 both the UK and America had developed electronic, digital computers for code breaking and fire tables for cannons. By 1950 the big mainframes were being sold and were used by banks, schools, and goverement. An ENICAC computer was used for the USA census in 1950. The 1952 presdental election winner was called hours in advance of the polls closing using a digital computer. The programing needed for cannon fire tables is very similar to that needed for almanac data.

    I think the almanacs gave more info. because they could.

    John H.

    Browse Files

    Drop Files


    What is NavList?

    Join NavList

    (please, no nicknames or handles)
    Do you want to receive all group messages by email?
    Yes No

    You can also join by posting. Your first on-topic post automatically makes you a member.

    Posting Code

    Enter the email address associated with your NavList messages. Your posting code will be emailed to you immediately.

    Email Settings

    Posting Code:

    Custom Index

    Start date: (yyyymm dd)
    End date: (yyyymm dd)

    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site