date-time-calculation

name	date-time-calculation
description	Use deterministic date/time tooling for timezone conversion, durations, weekdays, leap years, schedule math, and timestamp formats.

Date Time Calculation

When To Use

• User asks about weekdays, elapsed time, deadlines, schedules, time zones, Unix timestamps, Excel serial dates, Julian days, or leap years.
• A file, media, automation, or release workflow depends on exact calendar math.
• Guessing from memory would risk a wrong date.

Workflow

1. Identify the source date format and source timezone.
2. Use as_date_math for parsing, conversion, arithmetic, or comparison.
3. Specify target timezone when presenting local times.
4. Check leap-year, month length, ISO week, and daylight-saving-sensitive cases with the tool.
5. Include the timezone and timestamp format in the answer.

Preferred Tools

• as_date_math
• as_task_controller
• as_file_set_times
• as_file_rename

Output

• input interpreted
• timezone used
• computed result
• calendar notes