Multiple choice general knowledge math & puzzles what is next to 23:59pm 00:00 24:00 23:60 none of these Reveal answer Fill a bubble to check yourself A Correct answer Explanation In 24-hour time notation, after 23:59 comes 00:00 (midnight). The 24:00 notation is sometimes used to represent midnight at the end of a day, but sequentially it follows 00:00-23:59.