Python3?

[nickray]

Thank you for this great reference with easy to remember URL.

There are some useful new codes in Python3, like %G and %V for iso-year and iso-week.
Would you consider an overhaul?

[wessven]

Seconded. Although %G and the others are non-standard, strftime.org styles itself as a "Python strftime cheatsheet". I reckon the site must either be C89/C99 purist, or list what is available in Python's strftime.

Alternatively need to bookmark (or set up a redirection to) the official documentation.