Doing a search I did see someone ask about this in questions before but not sure if it ever was added yet.
So if there is a way to add 0 year please let me know.
If not this is a request for 0 year.
Thanks
6 Likes
Seconding this request! This is a big one for me. It may feel small, but it can have far-ranging effects.
In real-life Gregorian and Julian calendars there is no “Year 0” in the Common Era. It goes 2 BC → 1 BC → 1 CE → 2 CE…
(ie, no Year 0!)
But that’s based on some archaic thinking and math. Some modern systems use “Year 0”, maybe especially in fiction or science fiction where time was “reset” or “set to 0”. Imagine a sci-fi where the “UTC timecode” was set to 00000000. We’d want that to be “year 0”
Request:
Under Settings >> Edit Calendar >> Eras tab, could there please be a checkbox or other field to designate if the “final era” begins with Year 0 or Year 1?
Thanks!
1 Like
Hi @jondavis and @jwdenzel, thanks for the feedback.
We have had this feature request before, so it’s something we’d like to get to, but it’s likely to be quite a while off.
I really need this feature 
Tracking my character’s ages is such a pain because I have a year 0 in my story. No tool does this well and I had really high hopes for Aeon Timeline. Please add this! I’m using the trial right now but if you add this I’ll buy it for sure!
I also second this.
Thank you!
I don’t quite get this. January 1st , year 0 would be the first day of the year? Or the 0th day of the year?
Would January 1st, year 1 be the 1st day of the new year? Or the 0th day? 
I’m confused. Would any of you please elaborate?
1 Like
I’m not sure, either.
I think it might have to do with calculating durations. Right now, it calculates to the end of the period. In the forthcoming version 3.5, we’ll have the ability to choose to calculate to the beginning of the period or the end of the period. @AeonRob briefly mentions this in this video: https://www.youtube.com/watch?v=NkY_YtpYJ4w&t=231s
At least for me when studying BC and AD which BC meaning before Christ.
The prophecy of the 70 weeks and the 2300 days both go from BC to AD.
At least with some beliefs.
At first many would go from 1 BC to 1 AD but that messed up some timelines.
So many realized that the year Christ was born would be a zero year.
(Yes most timelines have Christ not being born that year but still)
That bumped up the timelines so they fit better.
So without that zero year it messes up dates set in AD.
Plus many of us make up our own calendars for fictional stories and use a zero date to divide eras.
1 Like
A zero date I understand. Beginning of Christian era would be, for instance, January 1st, year 1, GMT 0:00:00, which is equivalent to December 31st, year -1, GMT 24:00:00.
But year zero still confuses me… For instance, if you’re born in Jun 1st, year -1, how old would you be in Jun 1st, year 1, if a zero year existed?
2 Likes
If I had been born in the year 1 BC, my parents would most likely have used a different year count, because they wouldn’t have known about Christ. In Europe, by the way, they would not even have known the number zero.
However, all joking aside–there is a detailed article on the subject of “Year zero” on Wikipedia. In short: Year Zero is 1 BC, the year -1 is 2 BC. There is even an international standard for this. So it’s just a question of presentation.
2 Likes
If you are born any year you are not 1 until a full year has passed.
So the first year of your existence is zero until you reach that first year.
So if BC ended at the birth of Jesus and you don’t want to start counting the years till his first birthday that leaves you with a zero year.
I didn’t need to explain that so why did I.
1 Like
Oh, I see. Thanks for the explanation.
Here’s something worth trying.
If you create a one-year-long era in between BC and AD called “Year 0” or something similar it will allow you to have years that go 1BC > Year 0 > 1AD instead of 1BC > 1AD.
Noting that this is best suited to setting up a new file, as the option to add or edit eras is locked once the first dated event is added to the timeline.
1 Like