He assisted in the preparation of the American Nautical Almanac for 1857.
He was then for a short time in the Nautical Almanac office.
While the system of counting from the capital of the country is still used for local purposes, the tendency in recent years is to use the meridian of Greenwich for nautical and international purposes.
For example, let's take the nautical look.
This important proposal, the germ of the Nautical Almanac, was approved of by the government, and under the care of Maskelyne the Nautical Almanac for 1767 was published in 1766.