Last time I worked with Odoo (v15/v16, enterprise, self hosted) we had to send a dump of the production database over to you to be migrated to the new version and then it was sent back. The upgrade path for third-party and custom addons was not defined.
And since it is Odoo, everything is in that database: from employee's time tracking to customer support chats, from stock info to accounting data, from e-mail addresses to password hashes. I found this inacceptable but at that point we had no choice.
Too lazy to build it: Physically accurate bird view of the solar system at year zero of <INSTERT CALENDAR>. Grab whatever object with your mouse and move until reaching the desired point in time. Like grab Pluto to get somewhat near today, finetune with our Moon.