A NUMBER YOU CAN UNDERSTAND

How we count.

Elapsed days: start at Day 0

Our default counts calendar-day steps. November 1 to November 2 is 1 elapsed day; the same date is 0. These are calendar dates, not complete 24-hour periods.

Inclusive days: start at Day 1

Turn on inclusive counting to include both endpoints. November 1 to November 2 becomes 2 inclusive days; the same date becomes 1. This is one more than elapsed counting for a valid range.

Dates, timezones and leap years

Today comes from your device’s local timezone. Different local dates can produce different current counts. Leap days count normally: February 28 to March 1 is 2 elapsed days in 2024 and 1 in 2025. Daylight-saving clock changes do not add or remove calendar dates. Invalid dates and reversed ranges are rejected.

Milestones and countdowns

A milestone reconciles with the selected counting rule. A count of 10,000 completed days falls one day later than an inclusive 10,000th day. Holiday countdowns show zero and “Today” on the target date, then advance to the next annual occurrence. US Thanksgiving uses the fourth Thursday in November; Christmas uses December 25.

Fixed examples and live results

Examples are explicitly dated. Your live result shows its reference date. Ongoing results refresh when you return to the tab and within 30 seconds of a calendar-day change while the tab is active. A manually chosen date range stays fixed.

Your graphic

The same shared engine supplies the result and the card number. Cards carry a counting label. Names are optional and dates are hidden unless you turn on “Show dates on card.” Preview the final image before saving or sharing it.