Herodotus
Pro
Pro add-on for Herodotus - On This Day
What happened on this day,
every day of the year
Three new layouts, events that arrive before their day, cited sources and mapped locations, and a CSV importer for the archive you already keep in a spreadsheet.
Who it's for
History blogs
A daily post that writes half of itself, with the citation already attached.
Schools and museums
Import the curriculum calendar from a spreadsheet and put the timeline on the front page.
Anniversary trackers
Countdowns to the centenary, announced weeks before the date itself.
Music and art sites
Premieres, first nights and birthdays, sorted by priority and category.
What Pro adds
Grid
Two, three or four columns of event cards.
Carousel
One row of cards that scrolls sideways.
Timeline
A vertical line with the date on it and cards on both sides.
Upcoming events
Announce the day before it arrives
Show an event ahead of the date it belongs to. Each one is opted in with a checkbox, the range is set in days or up to a fixed date, and its card counts down instead of counting the years back.
Event data
Sources and places, properly recorded
A source carries a name and a link, with a nofollow option and a machine-readable citation for search engines. A location carries a place and coordinates, looked up in the editor and published as structured data.
Scholarly enough for a museum, simple enough for a blog.
Import and export
Bring the whole spreadsheet
CSV import with a preview, duplicate detection and a progress bar. Settings and events export and import as JSON, so a staging site and a live site can hold the same archive.
Multiple categories and tags
With category exclusion, so one feed can leave another's events out.
Priority events
Pin the anniversary that matters to the top of the day.
Fixed and “around today” dates
Show one chosen day, or a window either side of today.
REST API endpoint
Read the day's events from an app, a screen or another site.
Free vs Pro
Pro is an add-on. The free Herodotus - On This Day plugin must be installed and active; Pro adds to it and never replaces it.
| Capability | Free | Pro |
|---|---|---|
| On-this-day feed with annual recursion | Yes | Yes |
| Layouts | Three (list, compact, text) | Six (+ grid, carousel, timeline) |
| Upcoming events with countdown | - | Yes |
| Source with citation markup | - | Yes |
| Location with coordinates | - | Yes |
| CSV import with preview | - | Yes |
| Settings and events as JSON | - | Yes |
| Multiple categories, tags, exclusion | One category | Yes |
| Priority events | - | Yes |
| Fixed and “around today” date modes | - | Yes |
| REST API endpoint | - | Yes |
Pricing
Every plan starts with a {{ trialDays }}-day free trial of all Pro features - no credit card, and the trial ends by itself. One licence, one site. While the licence is active you get updates and support; when it expires the plugin stays installed and the site behaves as if only the free plugin were present.
Pro requires the free plugin to be installed and active.
- On-this-day feed, annual recursion
- Three layouts, shortcode and block
- SEO-ready, built-in caching
- One site
- All Pro features
- {{ planSupport }}
- One site
- All Pro features
- Updates and support, no renewal
Not sure yet? Start a {{ trialDays }}-day free trial - no credit card, ends by itself.