Windows
Hold Alt and type 0187 on the numeric keypad.
Punctuation
Copy the character, or use the shortcut that matches your keyboard and app.
Hold Alt and type 0187 on the numeric keypad.
Option + Shift + \
Type 00BB then Alt + X
Insert → Special characters → guillemet
Click the keycap, then paste with Ctrl+V or Cmd+V.
Num Lock on, hold Alt, type 0187, release Alt.
Use the Unicode, HTML, CSS, or JS value below in documents and stylesheets.
U+00BB»»\00BB\u{00BB}Alt + 0187