Tired of forgetting important dates? The Countdown Day Tracker is a tool dedicated to calculating date differences. By recording a target event date (such as a project deadline or wedding anniversary), it automatically calculates the number of days between the current date and the target date. Results are intuitively displayed as "X days remaining" or "Y days passed." Its core function processes time spans, ensuring your data is persistently saved via local browser storage.
Yes. All data is stored locally in your browser. Clearing the cache will result in permanent data loss. We recommend taking screenshots to back up important events regularly.
No. Currently, it only processes Gregorian calendar dates and one-time events. If you need recurring reminders, please use a dedicated calendar application.
Date calculation results depend on the accuracy of your device's system time. Do not use this tool for scenarios requiring millisecond precision, such as aerospace launches. We advise against recording detailed information for sensitive events. A maximum of 50 events can be stored at one time.
For highly time-sensitive critical events (like a visa expiration date), we recommend setting a system reminder on your phone as a double safeguard. Typical use case: Enter "Baby's Birthday" as 2023-05-20, and it outputs "427 days passed" to help track growth milestones.
Lunar and Solar Calendar Converter
A tool for converting dates between the lunar and solar calendars. It supports lunar leap months and is ideal for looking up holidays, birthdays, or historical dates.
Bazi to Gregorian Calendar Converter
A two-way Bazi and Gregorian calendar converter with Late Rat Hour (Zi Shi) rule options, designed for Chinese astrology and calendar calculations.
Expiration Date Calculator
Calculate the expiration date based on the production date and shelf life, or check the near-expiry and expired status based on the expiration date.
Age Calculator
Enter your birth date to instantly calculate your exact age, traditional Chinese age, and total days alive, plus find your Chinese zodiac, horoscope, and lunar birthday.
Baby 100 Days Calculator
Calculate the exact Gregorian and Lunar dates, along with the day of the week, for your baby's 1-month, 100-day, and 1-year milestones based on their birth date.
