Day 62: It's Monday, ok?

I'm getting tired of trying to figure out what day of quarantine it is, especially since I've been busy lately and haven't been getting around to posting my dailies until a day or two later. So here's some simple Ruby code to help figure out what day it is:

require 'date'

def what_day_is_it(arg)
  day_zero = Date.parse('2020-03-17')
  if arg.is_a?(Numeric)
    puts day_zero += arg
  elsif arg.is_a?(String)
    puts (Date.parse(arg) - day_zero).to_i
  end
end

Then if you want to know what day of quarantine is is/will be on a certain date you can do this:

what_day_is_it('2020-05-18')
  62

Or vice versa:

what_day_is_it(62)
  2020-05-18

Yes, yes, I know that I have way too many parentheses. I've been writing Python for the past few weeks, and switching back and forth is hard on my brain.