If you are promoting seminars, there are a few important guidelines to consider when choosing the date.

1.  September and October are generally the best attended months for seminars. Perhaps it is a holdover from the school-year schedule that seminars seem to do best in the fall, the back-to-school time of year.
2. Early November works well, but be careful to avoid the week of Thanksgiving for reasons already explained.
3. The winter months of January, February, and March are good, except where weather conditions could make travel difficult. As mentioned, in areas such as the Northeast there is often hesitation, cancellation, or dropoff due to bad weather. Also, avoid the beginning of January, since it falls right after a holiday.
4. April and May are also generally good months for promoting seminars. There are no major holiday conflicts except for Memorial Day and Easter.
5. June, July, and August are not the best months for promoting seminars because many people take their vacations during these months.
6. Although very early December can work well, December is the least favorable month because of the preoccupation with the Christmas holiday