1. console.time and console.timeEnd

    Functions for measuring performance

  2. High Resolution Time API

    Method to provide the current time in sub-millisecond resolution and such that it is not subject to system clock skew or adjustments. Called using `performance.now()`

  3. HTML5 semantic elements

    HTML5 offers some new elements, primarily for semantic purposes. The elements include: `section`, `article`, `aside`, `header`, `footer`, `nav`, `figure`, `figcaption`, `time`, `mark` & `main`.

  4. Date and time input types

    Form field widgets to easily allow users to enter a date, time or both, generally by using a calendar/time input widget. Refers to supporting the following input types: `date`, `time`, `datetime-local`, `month` & `week`.

  5. Temporal

    A modern API for working with date and time, meant to supersede the original `Date` API.

  6. animation api: timeline

  7. audiodata api: timestamp

  8. blobevent api: timecode

  9. console api: `timeend()` static method

  10. console api: `timelog()` static method

  11. console api: `timestamp()` static method

  12. console api: `timestamp()` static method: `color` parameter

  13. console api: `timestamp()` static method: `data` parameter

  14. console api: `timestamp()` static method: `end` parameter

  15. console api: `timestamp()` static method: `label` parameter

  16. console api: `time()` static method

  17. document api: timeline

  18. encodedaudiochunk api: timestamp

  19. encodedvideochunk api: timestamp

  20. event api: timestamp

  21. gamepad api: timestamp

  22. geolocationposition api: timestamp

  23. idledeadline api: timeremaining

  24. intersectionobserverentry api: time

  25. notification api: timestamp

  26. performance api: timeorigin

  27. pressurerecord api: time

  28. rtcencodedaudioframe api: timestamp

  29. rtcencodedvideoframe api: timestamp

  30. sensor api: timestamp

  31. sourcebuffer api: timestampoffset

  32. sourcebuffer api: timestampoffset: available in workers

  33. timeevent api

  34. timeevent api: detail

  35. timeevent api: view

  36. timeranges api

  37. timeranges api: end

  38. timeranges api: length

  39. timeranges api: start

  40. videoframe api: timestamp

  41. vrframedata api: timestamp

  42. xmlhttprequest api: timeout

  43. css property: timeline-scope

  44. css property: timeline-scope: all

  45. css property: timeline-scope: none

  46. types: `<time>`

  47. html element: time

  48. javascript built-in: temporal api: now: timezoneid