| dateorder enum name | time_base | |
| dmy enum value (defined in time_base) | time_base | |
| mdy enum value (defined in time_base) | time_base | |
| no_order enum value (defined in time_base) | time_base | |
| ydm enum value (defined in time_base) | time_base | |
| ymd enum value (defined in time_base) | time_base |
1.5.1