Illustrative example. The dates and amounts below are provided for practice.
A couple wants both a 200-day and a 500-day marker from January 1, 2027. The second calculation should use the original relationship start, not the date of the first celebration.
Run both offsets
For elapsed counting, enter January 1, 2027 and choose 200 Days after the start. The target is July 20, 2027. Keep the start unchanged and choose 500 Days. The second target is May 15, 2028.
The gap between these targets is 300 elapsed days. Adding another 500 days to the first milestone would instead produce a 700-day relationship target.
Compare inclusive versions
If the starting date is Day 1, use custom offsets of 199 and 499. The targets become July 19, 2027 and May 14, 2028. Their separation remains 300 days because both offsets move back by one.
Save two one-time records with the convention in their titles. Review the weekdays before selecting celebration dates, and keep moved gatherings separate in the planner.
The calculations include February 29, 2028 on the way to the larger target. No manual leap-day adjustment is needed.