1830-2030 will be 200 years

Source date (UTC): 2019-07-10 17:03:23 UTC

Original post: https://twitter.com/i/web/status/1149001179013271552

Reply addressees: @dar_warrior @HaraldMagnusson

Replying to: https://twitter.com/i/web/status/1148886196543606786

IN REPLY TO:

@dar_warrior

@HaraldMagnusson @curtdoolittle 200 years? That goes quite far. Got any source on that?

Original post: https://twitter.com/i/web/status/1148886196543606786