Lists data fields that differ from the last major version (see versions above). Inherited differences in locales are suppressed, except where the source locales are different.
| Section | Page | Header | Code | Locale | Old | New | Level |
| Date & Time | Gregorian | Formats - Flexible - 12 Hour Time Formats | Ehm | lt | hh:mm a, E | hh:mm a, E | moderate |
| Ehms | hh:mm:ss a, E | hh:mm:ss a, E |
| h | hh a | hh a |
| hm | hh:mm a | hh:mm a | basic |
| hms | hh:mm:ss a | hh:mm:ss a |
| hmsv | hh:mm:ss a; v | hh:mm:ss a; v |
| hmv | hh:mm a; v | hh:mm a; v | moderate |
| Formats - Intervals - 12 Hour Time Formats | h/h | hh–hh a | hh–hh a |
| hm/a | hh:mm a–hh:mm a | hh:mm a–hh:mm a |
| hm/h | hh:mm–hh:mm a | hh:mm–hh:mm a |
| hm/m |
| hmv/a | hh:mm a–hh:mm a v | hh:mm a–hh:mm a v |
| hmv/h | hh:mm–hh:mm a v | hh:mm–hh:mm a v |
| hmv/m | h:mm–h:mm a v | h:mm–h:mm a v |
| hv/h | hh–hh a v | hh–hh a v |
| Generic | Formats - Flexible - 12 Hour Time Formats | Ehm | h:mm a, E | h:mm a, E |
| Ehms | h:mm:ss a, E | h:mm:ss a, E |
| h | h a | h a |
| hm | h:mm a | h:mm a |
| hms | h:mm:ss a | h:mm:ss a |
| Formats - Intervals - Date Formats | h/a | h a–h a | h a–h a | comprehensive |
| h/h | h–h a | h–h a |
| hm/a | hh:mm a–hh:mm a | hh:mm a–hh:mm a |
| hm/h | h:mm–h:mm a | h:mm–h:mm a |
| hm/m |
| hmv/a | hh:mm a–hh:mm a v | hh:mm a–hh:mm a v |
| hmv/h | h:mm–h:mm a v | h:mm–h:mm a v |
| hmv/m |
| hv/a | h a–h a v | h a–h a v |
| hv/h | h–h a v | h–h a v |