Resample hourly TimeSeries with certain starting hour

Question

I want to resample a TimeSeries in daily (exactly 24 hours) frequence starting at a certain hour.

Like:

index = date_range(datetime(2012,1,1,17), fre         


        

Answer 1

2020 Update: for dataframes

Use the base keyword as referred in the doc:

Code example:

df.resample(pd.Timedelta('24 hours'), # or '24H'
 base=17 # <--  ADD THIS
).sum() 

Answer 2

Resample has an base argument which covers this case:

ts.resample(rule='24H', closed='left', label='left', base=17).sum()

Output:

2012-01-01 17:00:00    24
2012-01-02 17:00:00    24
2012-01-03 17:00:00    12
Freq: 24H