This is indeed a triviality compared to pressing issues such as Colin the Caterpillar but since DH and I can’t agree on this and it’s a disagreement which now happens every fortnight, I will ask you.
Freddie’s flowers get delivered on a Wednesday. Instructions on the plant food say change the water every 3-4 days. Does that include the Wednesday? So, do they get changed on Fri/Sat or Sat/Sun?
Obviously the solution is the change the water on a Saturday and keep everyone happy but we need to know who is right.