QUICK ANSWERStart with the tool that matches your immediate input.
Open Layover Time Checker first when its stated purpose matches the result you need now. Use Travel Day Counter only when it solves a separate next task.
This guide is for travelers, relocating workers, students, and families. Start with Layover Time Checker when your immediate task is to inspect your input with the Layover Time Checker and review a clear, useful report. Move to Travel Day Counter only when you also need to inspect your input with the Travel Day Counter and review a clear, useful report.
The goal is not to run two tools automatically. It is to finish the first narrow task, inspect its result, and then decide whether Travel Day Counter solves a genuinely different next step.
Both tools sit in Travel & Relocation, but they handle different inputs or outcomes. Keeping those roles separate reduces repeated work and makes verification easier.