Hi Brett,
I change mine before I go to bed my basal rate is the same then, I found it easiest to change it during a time where my basal rates were the most similar. If I did it in the morning it would send me a wee bit off for the rest of the day. I always check a bit more on a change over day just in case but I've not had any problems doing it like this. It all depends on what your basal is like if there are bit changes in the evening and through the night maybe it's better to leave it to the morning or afternoon. I quite like that it's on a Saturday/Sunday as I don't have to worry about being in a rush to be anywhere and then checking the basal's ok still.
Laura