I find it hard to visualise projects across the years on a Gantt chart, especially when there are seasonal tasks repeating.

It would be nice to have a tool that looks like a pregnancy calculator disc, that emphasises the repeating of seasons, etc:

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Is there any formal type of diagram or tool that does that?

1 Answer 1


The reliability in pregnancy is much higher than any type of work task. It is 266 days from conception, with only a very small variability except when you have something that is abnormal. Task duration is not like that, where "normal" can have a much larger range. Therefore, creating a tool like this for work would have an extremely low reliability and, therefore, validity.

  • I'm not suggesting static time allocation. This is pretty much a Gantt chart that is "bent" instead of horizontal, and there should definitely be room for variability :)
    – user967722
    Feb 11, 2014 at 17:42

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