Public speaking has aspects related to time of day that you must know about. The first speaker of the day for an early morning (8:00 a.m. to 10:00 a.m.) program should not expect hearty laughter. People are not conditioned to laugh a great deal in the early morning. Many won’t even be awake yet. Use more information and less humor.
It’s important for you to know when NOT to expect hearty laughter. It would be a waste of time to use your best speaking material at a time when laughter normally wouldn’t be expected. If you didn’t know that early morning programs aren’t the best for laughter, you could have your confidence shaken so badly that the rest of your presentation might suffer…
Many consider brunch to be the best speaking time of day to expect a responsive audience. It is late enough that the audience who sleep late are now awake, but not so late in the day that early risers are starting to get tired. Lunch is generally a time for good response for the same reasons as brunch.
In the afternoon people are starting to get tired. Audience members will retain less because they are not listening as closely as they did in the morning. You can use more humorous speaking and less hard information, but don’t expect laughter to be as intense.
The last speaker of a long afternoon program should not expect a great response, again because audience are too worn out. Keep your presentation short and crisp and acknowledge the lateness so that the audience knows you care about them.