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Holocene Epoch Timestamp icon

Holocene Epoch Timestamp

Add the Holocene Epoch timestamp (2023 CE becomes 12023 HE) before or after the timestamps present on the webpage (or replace them).

Users142Current public install base
Rating4.2Store average score
Reviews9Public review volume
Manifest versionV3Extension platform version
7-day growth+3Net users gained this week
7-day growth rate+2.16%Relative weekly velocity
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Holocene Epoch Timestamp Media preview

5 assets
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1391401421431452026年7月8日2026年7月11日2026年7月14日Latest: 142
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4.124.174.224.274.322026年7月8日2026年7月11日2026年7月14日Latest: 4.22
2026年7月8日2026年7月14日
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7-day growthGrowing
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30-day growthDeclining
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Technical snapshot

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Version1.0.6
ManifestV3
Size222KiB
Languages1English
Published
Store updated
Last crawled
English
Overview

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The Holocene Epoch sets the first year of the "recent" epoch 10,000 years before the first Anno Domini (1 AD) for a better grasping of the development of the human civilization. The proposal was advanced by Cesare Emiliani in 1993 (see more in the What is the Holocene Epoch? of the extension).

e.g.

"1 Aug. 2023" can become "1 Aug. 2023 [12023 HE]";

"399 BC" can become "/9602 HE/ 399 BC";

"10 Sep. 259 BC" can become "10 Sep. 9742 HE".

To Be Developed

Reviews

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Store average score4.2Chrome Web Store aggregate rating, including ratings without synced review text
Synced text average4.0Average computed only from synced review bodies below
Reviews with text7Synced review bodies
Total ratings / reviews9Chrome Web Store public rating/review count

Store average score: 4.2. The bars below are calculated from synced review text only, so they may be empty for extensions that have public ratings but no synced comments yet.

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Ruthie Premack2025年10月24日
5

Hi Jan Cavel, people who are visiting www.easytimeline.org and linking to your Holocene Epoch Timestamp are enjoying it! And analytics say visitation has increased. Your Holocene Epoch Timestamp makes wikipedia so easy to use! Your HE Timestamp concretely recognizes and labels the flowing HE timeline. Bravo! Today, doing a search wikipedia even labeled the date as "94th Century HE"! Thank you for your continued efforts!

Version 1.0.6Language en
Ivan Villalaz2023年11月20日
3

It's good to be fair, but have some flaws: the years from: (11900 to 11909), (12000 to 12009), sporting seasons like: (12000-01, or 12008-09), doesn't convert well, the first decade of every century doesn't convert properly, instead remains 1900-1909, 2000-2001, also some other ancient years, milleniums, doesn't convert adequately, can you fix this please? aside form that, this is something I was looking for a while ago, good effort.

Version 1.0.6Language en
Jadi C2023年6月2日
4

I have been looking for something like this. The only thing that I want to point out is that if you have something like: https://en.wikipedia.org/wiki/Ancient_Egypt Early Dynastic Period (c. 3150–2686 BC [7315 HE]) It only converts the last date. (2686 BC) You should do something that detect "3150–2686 BC", numbers that are atached with a "-". So that it converts to "6851-7315 HE". Can you please look into this, thanks.

Language en
1 helpful · 0 not helpful
Yuri Costa2022年3月29日
4

Been looking for this for a while. Is there any way to get a spacer for the thousands? i.e. 12 022 HE rather then 12022 HE

Language en
2 helpful · 0 not helpful
Johannes Hell2021年8月5日
3

I have been looking for this. Unfortunately it doesn't seem to work for other languages than English. In German 500 BC would be 500 v. Chr. The extension makes this appear as 10500 HE v.Chr. which is not exactly what I was looking for. Also sometimes it would change numbers that are not dates (e.g. "The town has 2000 [12000 HE] inhabitants.") There is a lot of potential but right now there are too many bugs for me.

Language en
Petko Dichev2019年11月4日
5

A great extension to be used for a great calendar adjustment

Language en
2 helpful · 0 not helpful
Samuel Ashcroft2019年4月13日
4

Absolutely brilliant, lots of customisability, however it infrequently doesn't convert the year, e.g. it displays '2004-2007' as '2004-12007 HE' in wikipedia subheadings.

Language en
2 helpful · 0 not helpful