The International Time Capsule Society (ITCS), based at Oglethorpe University in Atlanta, Georgia, is an organisation established to promote the study of time capsules. Since 1990 it has been documenting all types of time capsule projects worldwide.
The International Time Capsule Society states in their handout brochure as their mission:
To maintain a registry of timed events of all known time capsules.
To establish a clearing house for information about time capsules.
To encourage study of the history, variety and motivation behind time capsule projects.
To educate the general public and the academic community concerning the value of time capsules.
The International Time Capsule Society is an organisation dedicated to tracking the world's time capsules to ensure that those that are created are not lost. The ITCS has set up a registry of time capsules, and has 1,400 groups listed. The ITCS estimates there are between 10,000 to 15,000 time capsules worldwide. Paul Hudson of Oglethorpe University estimates that more than 80 percent of all time capsules are lost and will not be opened on their intended date.
The ITCS holds conferences on a regular basis at Oglethorpe University at their campus in Atlanta, Georgia. Members from around the world meet to discuss time capsule projects; guests are welcome to attend.

