NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Geoff Hitchcox
Date: 2023 Dec 1, 02:13 -0800
Bill Ritchie wrote:
> What happened to the sailor’s “50 minutes later every day” adage?
It still works Bill ;-)
I did the following experiment:
Assumed Position --> Taylor Point,RI = N 41.51062°, W 71.35949°, 5 metres
Moon RTS (Rise, Transit, Set) delta times for all of 2023 at Taylor Point.
Rise Average = 50.39 minutes later per day.
Transit Average = 50.45 minutes later per day.
Set Average = 50.47 minutes later per day.
These values are pretty close to the long term average (several decades) of 50.46415 minutes later per day.
With 2 tides per day (50.46415 / 2) = 25 minutes 14 seconds.
12 hrs + 25 minutes + 14 seconds = rotation rate of a Quartz Tide Clock.
Following Dates and Time all UTC
Maximum Time Moon is in the Taylor Point Sky for 2023
Rise=02Nov2023,00:15:08.6;Set=02Nov2023,16:36:33.2; dt=16:21:24.6
Minimum Time Moon is in the Taylor Point Sky for 2023
Rise=22Sep2023,18:29:14.2;Set=23Sep2023,03:01:13.0; dt=08:31:58.8
Linked File: https://navlist.net/imgx/MOON_RTS_delta_Taylor_Point_RI_2023.txt
