Date & Time
D-Day countdown, world time planner, Unix timestamp converter, Pomodoro timer, and stopwatch
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(CLS Prevention Active 路 Zero Shift)Available Tools (12)
Date, D-Day & Business Days Calculator
Calculate days between dates, working business days excluding weekends, N days projection, and milestones.
Unix Epoch Timestamp Converter & Live Ticker
Convert seconds & milliseconds Unix timestamps to KST, UTC, ISO 8601, and local time with live ticker.
World Time Meeting Planner & Overlap Matrix
Compare multi-city timezones (Seoul, New York, London, Tokyo, Sydney) and pinpoint optimal working hour overlaps.
Age, Zodiac Animal, Astrological Sign & Birthday D-Day Calculator
Calculate international legal age, total days lived, 12-year animal zodiac, astrological sun sign, and birthday countdown.
Business Days Calculator (Working Days & Future Deadline)
Calculate net business working days excluding weekends and holidays, and project future milestone deadlines.
Pomodoro Focus Timer (Web Audio Chime & Session Counter)
Customizable 25/5 focus & break intervals with synthesized Web Audio chimes and daily session tracking.
Online Precision Stopwatch (Millisecond Lap Timer & Rankings)
High-resolution millisecond stopwatch with split/lap logging, fast/slow color ranking, and export.
South Korean Military Discharge & 2026 Soldier Pay Calculator
Calculate discharge date, real-time service progress bar, rank promotions, and 2026 soldier pay scales.
Ovulation, Fertile Window & Pregnancy Due Date Calculator
Predict ovulation date, optimal fertile conception window, Naegele's rule due date, and current gestational age.
Jet Lag & Circadian Sleep Planner
Personalized circadian shift schedule with bedtime pacing, bright light exposure windows, and in-flight sleep strategies.
Sunrise, Sunset & Photography Golden Hour
Calculate sunrise, sunset, solar noon, dawn/dusk, and photography golden and blue hours for any city or GPS coordinate.
Holiday Real-time Countdown & Custom D-Day
Live ticking countdown to the next statutory public holiday, annual year progress tracker, and custom D-Day milestone manager.
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