How to use this tool
- Enter first date, interval, number of dates.
- Select Calculate to view the result.
- Check the method and assumptions below before using the result.
The method, explained
Date n = first date + (n − 1) × interval calendar days, with n starting at one. UTC calendar arithmetic avoids local daylight-saving shifts.
Using first date = 2026-09-21, interval = 7, number of dates = 12, the result is 2026-09-21 2026-09-28 2026-10-05 2026-10-12 2026-10-19 2026-10-26 2026-11-02 2026-11-09 2026-11-16 2026-11-23 2026-11-30 2026-12-07. Change these example inputs to match your task; use the method above to check each step.
Understanding your result
No. Calendar months have different lengths. This generator keeps a fixed day interval, such as 7 for weekly or 14 for every two weeks.
What to keep in mind
A fixed number of days is not the same as a calendar month. This generates a list, not reminders or calendar events.
Common questions
Is an interval of 30 days the same as monthly?
No. Calendar months have different lengths. This generator keeps a fixed day interval, such as 7 for weekly or 14 for every two weeks.
Is the first date included?
Yes. The first date is item one; every later item adds one interval.
Methodology maintained by ClarityKit. How these tools are built and checked.