Timeline with date range 1948-1953

Sebastian S. shared this question 19 days ago
Discussion Open

Hello everyone,

I would like to display a historical timeline (1948-1953). When I create and save milestones for this, 01.01.2001 is displayed as the date for all milestones when I open the MindMap again. How can I enter dates with a year < 2001 in a MindMap?

Many thanks in advance and best regards
Sebastian Schiller

Best Answer
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The "epoch" date in Unix is 1st January 1970 and this is commonly used in software including Windows. Date values are actually the elapsed time since the epoch date. This suits task management but not historical dates. I think older dates will have to be treated as text, not dates. ISO 8601 format (YYYY-MM-DD) can be sorted alphabetically into date order.

Replies (3)

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It looks like its only possible for > 1970....
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I found the following when trying it out:
Properties Date:
earliest date 01.01.2000 (there was something with the date)
I would like to be able to enter my date of birth.
It is only possible to scroll back to 02.01.1970.
I am older ;-)

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the same problem with import from project...
somethig is wrong in MM

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I don't think there is anything wrong in a technical sense with MindManager - its just that "Day Zero" appears to be 1 January 1970. There is a similar date in MS Outlook only it happens to be much earlier: 1 April 1601 (see https://office-watch.com/2019/whats-the-earliest-date-possible-in-outlook-and-workaround/)

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Then day zero should be sooner.

And here I can't overwrite 1970, only 2 0 0 0

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But scroll back to 1970.

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But

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The "epoch" date in Unix is 1st January 1970 and this is commonly used in software including Windows. Date values are actually the elapsed time since the epoch date. This suits task management but not historical dates. I think older dates will have to be treated as text, not dates. ISO 8601 format (YYYY-MM-DD) can be sorted alphabetically into date order.

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Thank you Nick,

I was aware of the date problem but no longer realise it. It was too long ago. I hadn't thought about it before. Learned something new again

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Dear All,

thank you so much for all your efforts you spent so far!

It seems that such a custom attribute in text format might be the only path forward. From the perspective of a pure mind map that's fine. The disadvantage of that solution might be that the MindManager's time table function can't be used to illustrate milestone and spanes. Any other thought?

Best

Sebastian

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Hi Sebastian,

we've been talking more about technical details so far. What should the timeline represent and be able to do?

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Hi René,

The mind map is intended to analyse a real crime from 1948. For this, it contains different parts of information such as persons and documents / measures.

Each document / measure got a time stamp (milestone) from the day the document has been provided or the measure has taken place.

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In the example I have used the year "2023" instead of "1948".

With that, it is very easy to use MidManager Gannt chart functionality in order to illustrate all milestones in a timeline.f6c0659245759e4bfc803d12f3b55a13

Both, structuring of relevant information (e.g. persons) of a complex crime and its illustration along milestones is the intention of the MindMap.

Hope this helps to understand my needs.

Don't hesitate to ask me for further information.

Many thanks in advance

Sebastian

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