[spam] [random] google's clock is ahead of my cell phone's

[grarpamp]

On 7/26/21, Karl <gmkarl at gmail.com> wrote:
> # I'm imagining that data is communicated via server timestamps
>
> ~ $ TZ=GMT date; curl -v google.com; TZ=GMT date
> Mon Jul 26 23:03:59 GMT 2021
> < Date: Mon, 26 Jul 2021 23:04:06 GMT
> Mon Jul 26 23:04:01 GMT 2021
>
> # google is 5-7 seconds ahead of me right now

That assumes you are correctly in sync with UTC.

There is a related tool...

https://github.com/ioerror/tlsdate

Many other application protocols and data streams
and services embed timestamps that could be extracted.