Historical Facts for
Every Day of the Year

Power your apps with rich historical data. Access thousands of curated facts through a simple, reliable REST API.

Get Started FreeView Documentation
GET /api/facts/today
x-api-key: your_api_key_here
{
  "date": "1/12",
  "count": 8,
  "facts": [
    {
      "id": 1,
      "year": 2010,
      "title": "Haiti Earthquake",
      "description": "Magnitude 7.0...",
      "category": "Disasters"
    }
  ]
}

Built for Your Use Case

From social media automation to educational apps - we've got you covered

📱

Social Media Automation

Auto-post daily historical facts to Twitter, Instagram, or Facebook with pre-formatted text and hashtags.

  • ✓ Pre-formatted text
  • ✓ Auto hashtags
  • ✓ Multiple formats
/api/facts/on-this-day-in-history
🔗

Zapier & No-Code Integration

Connect to 5,000+ apps using Zapier, Make.com, or n8n. No coding required.

  • ✓ Zapier ready
  • ✓ Make.com support
  • ✓ No coding needed
/api/webhooks
🔔

Team Notifications

Send daily facts to Slack or Discord channels. Keep your team engaged and learning.

  • ✓ Slack webhooks
  • ✓ Discord integration
  • ✓ Automated delivery
/api/webhooks
🔥

Trending & Popular Content

Discover what's popular with trending facts and smart content recommendations.

  • ✓ Most popular facts
  • ✓ Related content
  • ✓ Smart discovery
/api/facts/trending
📅

Interactive Timelines

Build beautiful timeline visualizations and calendar heatmaps for any year or decade.

  • ✓ Calendar data
  • ✓ Heatmap format
  • ✓ Browse by decade
/api/facts/calendar/2024
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Fast & Reliable

Built on Vercel Edge Network with 99.9% uptime SLA. Sub-100ms response times globally.

  • ✓ Lightning fast
  • ✓ Global CDN
  • ✓ 99.9% uptime
/api/facts/today

Simple, Transparent Pricing

Start free, scale as you grow

Free

$0/forever
1,000 requests/month
  • ✓ All endpoints
  • ✓ Basic support
  • ✓ Community access
  • ✓ API key management
MOST POPULAR

Pro

$9/per month
25,000 requests/month
  • ✓ Everything in Free
  • ✓ Priority support
  • ✓ Advanced analytics
  • ✓ Higher rate limits
  • ✓ Email notifications

Business

$29/per month
100,000 requests/month
  • ✓ Everything in Pro
  • ✓ 99.9% uptime SLA
  • ✓ Custom rate limits
  • ✓ Webhook notifications
  • ✓ Priority bug fixes

Quick Start Guide

Get up and running in less than 5 minutes

1. Get Your API Key

Sign up and generate your free API key from the dashboard.

Go to Dashboard →

2. Make Your First Request

curl https://thisdayinhistory.io/api/facts/today \
  -H "x-api-key: your_api_key_here"

3. Explore More Endpoints

Trending Facts
/api/facts/trending
Related Content
/api/facts/related?id=123
Social Media
/api/facts/on-this-day-in-history
Browse by Decade
/api/facts/decade/1960s
Calendar Data
/api/facts/calendar/2024
Webhooks
/api/webhooks

Ready to Get Started?

Join developers building amazing historical applications

Start Building Now