What counts as a business day?

A business day is a weekday (Monday through Friday) that is not a public holiday. Our calculators allow you to exclude weekends and a list of common public holidays for accurate business day calculations.

How is age calculated?

Age is calculated as the complete duration from the date of birth to the current date, expressed in years, months, and days. We account for leap years to ensure the highest accuracy.

Yes. All calculations happen directly in your browser. We do not store any personal information you enter into the calculators. Your data never leaves your device.

Can I use these tools on my mobile device?

Absolutely! DateKeep is designed to be fully responsive, which means it works seamlessly on desktops, tablets, and smartphones. All features are available on any device.

How accurate are the time and date calculations?

Our calculators use a reliable and widely-used date-fns library for all calculations. This ensures high accuracy, including accounting for complexities like leap years. For time-sensitive operations like the countdown timer, accuracy depends on your device's clock.

What is a Unix Timestamp?

A Unix timestamp represents a point in time. It is the number of seconds that have elapsed since midnight UTC on January 1, 1970. It's a common standard used in computing.

What is a Julian Date?

A Julian Date or Julian Day Number (JDN) is the continuous count of days since the beginning of the Julian period (January 1, 4713 BC). It is used primarily in astronomy to provide a single, unambiguous system for dating events without confusion over different calendar systems or time zones.

Date Incrementer | DateKeep

About the Date Incrementer

The Date Incrementer is a practical tool for anyone who needs to plan events, track milestones, or create schedules. It allows you to quickly generate a list of future dates by repeatedly adding a custom time interval to a starting date. This is perfect for mapping out project timelines, planning recurring meetings, or creating a payment schedule.

Use Cases

Project Management: Map out weekly sprints or bi-weekly check-ins over the course of a project.
Event Planning: Schedule a series of workshops or appointments that occur at regular intervals.
Financial Planning: Generate a list of monthly payment due dates or quarterly reminders.
Personal Scheduling: Plan out a workout routine or track medication schedules.

Handling Complex Date Logic

The tool intelligently handles the complexities of date calculations. For instance, when you add one month to January 31, the calculator correctly returns the last day of February (either the 28th or 29th), ensuring your sequence is always logical and accurate without you having to worry about the different lengths of months.

Related Tools

If you need to calculate the number of days between two specific dates, our Days Between Dates calculator is a great companion. For calculating a single deadline based on workdays, see the Workdays Deadline Calculator.