Index - U
| UCT | Kairos |
| unDate | Kairos.Types.Date.Internal, Kairos.Types.Date |
| unDateString | Kairos.Types.Date.Internal, Kairos.Types.Date |
| Universal | Kairos |
| UnsafeDate | Kairos.Types.Date.Internal |
| unTimeFormat | Kairos.Types.TimeFormat, Kairos |
| US__Alaska | Kairos |
| US__Aleutian | Kairos |
| US__Arizona | Kairos |
| US__Central | Kairos |
| US__Eastern | Kairos |
| US__East_Indiana | Kairos |
| US__Hawaii | Kairos |
| US__Indiana_Starke | Kairos |
| US__Michigan | Kairos |
| US__Mountain | Kairos |
| US__Pacific | Kairos |
| US__Samoa | Kairos |
| UTC | Kairos |