If the time refers to an activity, the field name should have the form of verb_time, such as create_time, update_time. Use features like bookmarks, note taking and highlighting while reading Until the End of Time: Mind, Matter, and Our Search for Meaning in an Evolving Universe. This made it the border between slave states and free states. ISO 8601 Data elements and interchange formats – Information interchange – Representation of dates and times is an international standard covering the exchange of date- and time-related data.It is maintained by the Geneva-based International Organization for Standardization (ISO) and was first published in 1988 with updates in 1991, 2000, 2004 and 2019. They are contextless. The