paste <(cal 2020) <(cal 2021) # Look at the full year calendar for 2020 and 2021 side by side. (Requires a term width >= 138). If you don't have that large of a term, you can change the orientation to vertical like this: { cal 2020 ; cal 2021; } or pipe it to less -S

— Command Line Magic (@climagic) March 31, 2020