One of my weird hobbies is figuring out web tools I can manipulate from just changing something in the URL.

In my just ranted piece on Instagram I sought out a thing that would tell me when in time a certain date was that was like 247 weeks ago.

Research Maniacs had just the thing, as well as gazillion other nifty lookup tools. There is a number information tool, this link tells me everything about the number 13

Do I have to look up via a web form the info for the meaning of 49? Nope, just edit the URL

You might then see the same pattern for their Texting abbbreviation lookup tool:

Or Roman Numerals

This tells me at some point I could build some Javascript tools that could leverage their URL patterns.

Anyhow, I was curious what the limits of the Weeks Ago tool was.

I started plugging in big numbers, which generates 404 errors. Error Error Error This works!

By zeroing in on both sides, I found the limit of the tool is 9999 weeks ago (which today means Monday August 9, 1824).

One might guess a limit of 5 digits? Maybe a database character limit? Who knows?

I find the same limit for days ago… Error Ok

and time…

That’s my hobby.

Top / Featured Image: Screenshot of Research Maniacs web tool for finding the date of a certain time in the past; in this case I found that 10,000 weeks ago was one week beyond it’s limit.

The post "Playing With Programmable URLs" was originally rescued from the bottom of a stangant pond at CogDogBlog ( on March 28, 2016.


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