Planning arithmetic only—not a delivery promise or optimal schedule. Durations, resource labels, calendars, dependencies, and fixed constraints are assumptions. The resource heuristic may not find a feasible schedule even when one exists.

Hard project deadlineWorking weekdays (0=Sun…6=Sat)Workday hoursScenario nameHoliday dates (comma/newline)

Dependencies are predecessor IDs separated by commas: each predecessor must finish before this task starts. A task’s buffer is reserved after that task before every successor. Fixed dates use the selected working calendar; date-only fixed finish means end of that workday. Resource heuristic processes successors first and shifts same-resource flexible tasks earlier until they no longer overlap.

JSON / CSV import and local save

Import

Schedule and forward replay

Backward schedule, dependency replay, slack, and status
ID / task	Resource	Planned start	Planned finish	Forward start	Forward finish	Slack hours	Status	Timeline

Backward Deadline Planner

JSON / CSV import and local save

Schedule and forward replay

Diagnostics