A longitudinal study, like a cross-sectional one, is observational. So, once again, researchers do not interfere with their subjects. However, in a longitudinal study, researchers conduct several observations of the same subjects over a period of time, sometimes lasting many years.
In the year 2017, Thanksgiving Day will falls on Thursday, November 23, 2017. There are 222 days until Thanksgiving Day 2017.
Thanksgiving Day is a time for many people to give thanks for what they have. Thanksgiving Day parades are held in some cities and towns on or around Thanksgiving Day. Some parades or festivities also mark the opening of the Christmas shopping season.