More tools

➜ Ulbow and Consolation – free log browsers for Sierra to Big Sur. Although very powerful, they have simplified settings to help those interested primarily in Time Machine. Also look at Mints, which has a dedicated feature for checking Time Machine logs which gives full detail without complicated controls.

➜ General Mac help - thousands of articles online, including many on Time Machine and backups.

➜ Interpret result

The Eclectic Light Company – https://eclecticlight.co