Systems and methods for using digital calendar to timely and relevantly preserve and associate personal digital creations that include all drawings, photos, videos, files, journals, and any personal thoughts documented in blogs, notes, and/or digital files in any digital formats in user specified and/or created context environment, and to freely and creatively view, edit, assemble, distribute, share, print, and publish those personal digital memory footprints stored in the context digital calendar system in both digital and non-digital ways. The context based calendar system serves as a portable digital center for planning, collecting, preserving, documenting, and publishing important events, thoughts, digital creations, and memories for a person or a group of people in addition to usual calendar functions. The system can be used as either standalone software application, or be embedded within other software applications, and/or be used as web based service(s).