# [Julia 0.6], 32 bytes

Thanks to @Dennis for pointing out `<` saves a byte over `!=`.

<!-- language-all: lang-julia -->

    @assert Dates.dayofweek(now())<7

[Try it online!][TIO-jc2dttoq]

[Julia 0.6]: http://julialang.org/
[TIO-jc2dttoq]: https://tio.run/##yyrNyUw0@//fIbG4OLWoRMElsSS1WC8lsTI/rTw1NVsjL79cQ1PTxvz/fwA "Julia 0.6 – Try It Online"