Date and Age Calculator

Working days and business days calculator

mangudai/working-days-business-days-calculator

Count working days between two dates for 150+ countries. Removes weekends and public holidays, then returns one row per date range with the working day total and the holidays inside it. Offline, no API key, nothing to break.

Domain Age Checker

automation-lab/domain-age-checker

Check domain age and registration dates in bulk using RDAP — the modern WHOIS replacement. Returns registration date, expiration date, registrar, nameservers, and age in days/years. Ideal for SEO analysis, fraud detection, and domain research.

Input: a list of domains. Output: one JSON record per domain with the WHOIS registration date and exact domain age in years and days. A trust and SEO signal agents and marketers use to vet sites. Cheap pay-per-result pricing: $0.02 per domain checked.

Find Facebook ads running 60+ days for any keyword or competitor page — longevity means the ad is profitable. Sorted by days running, with creative text and CTA.

Find LinkedIn ads running 30+ days for any keyword or advertiser — longevity means the B2B ad converts. Sorted by days running, with headline, body, CTA and campaign period.

🗄️ Reddit Archive Scraper - Years of Posts & Comments

benthepythondev/reddit-archive-scraper

Reddit Archive Scraper to extract years of historical Reddit posts and comments from the PullPush archive. Reddit's API caps subreddits at ~1000 posts; this Actor pulls months or years from many subreddits by date range and keyword. For historical backfill, research and AI datasets.

Holiday and Business-Day Calculator

c4m3r0n808/holiday-business-calculator

Calculate business days and deadline shifts across borders without a spreadsheet. Get public holidays for any of ~100 countries, count working days in a range, and roll a due date past weekends and holidays. Built for logistics, compliance, and ops teams working in markets beyond the US and UK.

Skyscanner Flight Price Calendar

xtracto/skyscanner-scraper

Get the cheapest daily flight prices between any two airports for the next 12 months in one structured dataset. Built for fare tracking, route discovery, price-alert apps, and travel content sites.

Cron Expression Parser and Next Run Times

mangudai/cron-expression-parser

Parse cron expressions and get the next scheduled run times with a plain-English description. Give one or more standard cron strings and get a clean table of upcoming runs, weekdays, and validity. Offline, no API key.