https://timenavigator.org/
Time Navigator - Your Trusted Resource for Time Calculation Tools | TimeNavigator.org
TimeNavigator.org provides free time calculation tools to help you plan and calculate time-related needs. Calculate future times, time differences, and manage...
time navigatorcalculation toolstrustedresource
https://practical-navigator-training.teachable.com/courses/chart-plotting-problems-for-us-coast-guard-exams/lectures/6457940
Speed, Distance, Time Problems | Practical Navigator Training
A comprehensive course on chart plotting for all levels of U.S. Coast Guard license, including Unlimited Tonnage.
speed distance timeproblemspracticalnavigatortraining
https://lists.w3.org/Archives/Public/public-rww/2021Jul/0009.html
Space-time navigator? from Timothy Holborn on 2021-07-20 (public-rww@w3.org from July 2021)