In Scott Manley's new video 173 Kiloton Explosion Over Bering Sea Was Asteroid Breaking Up a bit after 01:30 he says

The good news is that in these days of near-limitless data storage capabilities the internet has a long memory, and we can look at the Himawari satellite which is a weather satellite in geostationary orbit that covers the area in question.

I normally view Himawari images from https://www.jma.go.jp/en/gms/ and if you open an image in a new window and look at the URL you can guess how to change the date and time into the past. That works for several days or a week, but not three months.

Question: Where are three-month-old or possibly even year-old Himawari weather satellite images available to the public?

In Scott Manley's new video 173 Kiloton Explosion Over Bering Sea Was Asteroid Breaking Up a bit after 01:30 he says

The good news is that in these days of near-limitless data storage capabilities the internet has a long memory, and we can look at the Himawari satellite which is a weather satellite in geostationary orbit that covers the area in question.

I normally view Himawari images from https://www.jma.go.jp/en/gms/ and if you open an image in a new window and look at the URL you can guess how to change the date and time into the past. That works for several days or a week, but not three months.

Question: Where are three-month-old or possibly even year-old Himawari weather satellite images available to the public?

As an exercise, per:

• How was the 18 December 2018 Bering Sea Fireball detected and characterized? Was it a serendipity or a weather satellite?
• https://cneos.jpl.nasa.gov/fireballs/

the event was at 2018-12-18 23:48:20 UTC and 56.9N 172.4E.