How to Mentally Calculate the Day of the Week for Any Date: is it still online? | SaaS OutpostAugust 2026 cohort / Education
An interactive lesson teaches people to calculate weekdays mentally using Conway's Doomsday Rule.
- Status
- Onlinesince Nov 5, 2026
Last 30 days
100% of checks answered · median response 1,322 ms
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Domain and certificate
- Registrar
- Cloudflare, Inc.
- Registered
- Jul 2, 2026 · 53 days before launch
- Renewal due
- Jul 2, 2027 · in 8 months
- DNS
- Cloudflare
- HTTPS certificate
- valid to Jan 26, 2027 · 3 months left
Registration data for tinkerandsee.com from the registry's public RDAP service, looked up Nov 5, 2026.
History
Launched
· Launch announcement
Online
· online
- Last checked Nov 6, 2026
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