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+# Days / hours boundary in `precisedelta`
+
+When a `timedelta` is described by `precisedelta`, it
+is aimed to be as human as possible.
+
+```python
+>>> import humanize
+>>> import datetime
+
+>>> humanize.precisedelta(datetime.timedelta(days=31))
+'1 month and 12 hours'
+
+>>> humanize.precisedelta(datetime.timedelta(days=62))
+'2 months and 1 day'
+
+>>> humanize.precisedelta(datetime.timedelta(days=92))
+'3 months and 12 hours'
+
+>>> humanize.precisedelta(datetime.timedelta(days=32))
+'1 month, 1 day and 12 hours'
+```
+
+Setting a minimum unit forces us to use fractional value for the latest
+unit, in this case, `days`:
+
+```python
+>>> humanize.precisedelta(datetime.timedelta(days=31), minimum_unit='days')
+'1 month and 0.50 days'
+
+>>> humanize.precisedelta(datetime.timedelta(days=62), minimum_unit='days')
+'2 months and 1 day'
+
+>>> humanize.precisedelta(datetime.timedelta(days=92), minimum_unit='days')
+'3 months and 0.50 days'
+
+>>> humanize.precisedelta(datetime.timedelta(days=32), minimum_unit='days')
+'1 month and 1.50 days'
+```
+
+The `format` controls how this fractional (latest) value is formatted.
+Using an integer representation like `'%d'` may yield unexpected results
+as things like `0.50 days` are cast to `0 days` during the formatting:
+
+```python
+>>> humanize.precisedelta(datetime.timedelta(days=31), minimum_unit='days', format='%d')
+'1 month and 0 days'
+
+>>> humanize.precisedelta(datetime.timedelta(days=62), minimum_unit='days', format='%d')
+'2 months and 1 day'
+
+>>> humanize.precisedelta(datetime.timedelta(days=92), minimum_unit='days', format='%d')
+'3 months and 0 days'
+
+>>> humanize.precisedelta(datetime.timedelta(days=32), minimum_unit='days', format='%d')
+'1 month and 1 days'
+```
+
+`precisedelta` accepts a `truncate` flag to truncate and drop values too
+close to zero.
+
+```python
+>>> humanize.precisedelta(datetime.timedelta(days=31), minimum_unit='days', format='%d', truncate=True)
+'1 month'
+
+>>> humanize.precisedelta(datetime.timedelta(days=62), minimum_unit='days', format='%d', truncate=True)
+'2 months and 1 day'
+
+>>> humanize.precisedelta(datetime.timedelta(days=92), minimum_unit='days', format='%d', truncate=True)
+'3 months'
+
+>>> humanize.precisedelta(datetime.timedelta(days=32), minimum_unit='days', format='%d', truncate=True)
+'1 month and 1 days'
+```
+
+Notice the `truncate=True` does not imply `format='%d'` as fractional
+numbers are still possible and `format` still apply:
+
+```python
+>>> humanize.precisedelta(datetime.timedelta(days=31), minimum_unit='days', truncate=True)
+'1 month'
+
+>>> humanize.precisedelta(datetime.timedelta(days=62), minimum_unit='days', truncate=True)
+'2 months and 1 day'
+
+>>> humanize.precisedelta(datetime.timedelta(days=92), minimum_unit='days', truncate=True)
+'3 months'
+
+>>> humanize.precisedelta(datetime.timedelta(days=32), minimum_unit='days', truncate=True)
+'1 month and 1.50 days'
+```
+
+## References
+
+See [issue 14](https://github.com/python-humanize/humanize/issues/14)