[Pretty Girl]

To see your login history on your Mac:

1. Open the "Terminal" app
2. Type the word last followed by your username. For example, last kumar.
3. A list of login activity for your user account will appear in reverse chronological order.

For folks unfamiliar with Terminal:
To open, you can quickly find it in the Spotlight Search (hourglass search icon at top-right of screen).
You can also press "command" + the space bar on your keyboard to launch the shortcut.
The process I described worked today for me. I am using Big Sur (11.0). I have tested it with other Mac operating systems.