The birth year is only the start
GlobalBazi needs year, month, day and time because each layer can reveal a different animal. Year-only readings miss much of the personal picture.
Hour boundaries matter
Traditional time blocks are roughly two hours long. If birth time is close to a boundary, the hour animal may change, so an official record is helpful.
Birthplace affects time conversion
Different cities have time zones and sometimes daylight-saving rules. Birthplace helps the system calculate the chart closer to the actual local time.
Unknown time can still give a first reading
If birth time is unknown, you can still start with the first three layers. Hour-related future direction and deeper habits should be treated carefully.
Better data makes the report more specific
When the animal positions and element balance are more reliable, the report can speak more clearly about work, relationships, stress and practical direction.