User:Crissov/Day
| System | Start | Mid-day |
|---|---|---|
| civil | 00:00Z | 12:00Z |
| schedule | 03:00Z | 15:00Z |
| business | 06:00Z | 18:00Z |
| ancient | sunrise | sunset |
| natural | dawn | dusk |
| astronomical | 12:00Z | 24:00Z |
| ecclesiastical | 18:00Z | 06:00Z |
| Medieval | sunset | sunrise |
| Biblical | nighfall | sunrise |