The best lighting for portraits happens at sunrise or an hour or two before sunset. Because of this, I always plan your session around the start or end of the day.
Sunrise: If you prefer a quiet, calm settings, describe yourself as a morning person and prefer to avoid the crowds, sunrise time can be quite magical for photos.
At this time of day, it truly feels like you have the entire city to yourself for your photos. Because the most gorgeous lighting happens promptly at sunrise, I recommend meeting before dawn. Bring your coffee mugs and be sure to plan a breakfast filled with mimosas to celebrate afterward.
Sunset: If early mornings aren't for you and you'd like to have the afternoon to schedule your makeup and hair appointments, sunset is most likely for you.
Majority of my clients will schedule their photos for this time of day. If we're shooting in the city or somewhere with skyline views, we'll likely take photos until all the city lights begin twinkling in the backdrop.