Recurring Schedule End-Date Calculator

Worked example

A weekly Monday schedule starting January 4, 2027, reaches its 4th occurrence on January 25, 2027, three full weeks after the first Monday, since each occurrence simply advances by seven days from the one before it. A daily schedule with a 3-day interval starting the same date reaches its 4th occurrence on January 13, nine days later, since each step advances by three days instead of seven. Knowing exactly which calendar date a schedule's Nth occurrence falls on matters whenever a plan or agreement is stated as a fixed number of recurring events rather than a fixed calendar end date.

Common mistakes

• Counting the start date as occurrence zero instead of occurrence one. The start date, if it matches the rule, is always the first occurrence.
• Requesting more occurrences than the supported preview window can generate, which is reported directly rather than silently returning a shorter list.

Limitations

This solves a plain occurrence count, not a schedule bounded by an end date and exception list together. For a schedule with removed or moved occurrences, use the Schedule Exception Resolver alongside this calculator.