"Ideal time" refers to the most suitable or perfect moment for something to happen or be done. It is the time that would be most advantageous or beneficial for a particular situation or task. Full definition
The market is definitely moving and right now we hit the summer months which theoretically is the most ideal time for families to make a move. (mother-sonteam.com)
The toddler was potty training (not ideal timing, but he was ready) and had to go. (crappypictures.com)
The earlier you can pull them the better, as ideal times and popular rides run out quickly, with limited availability day - of. (travelandleisure.com)