formatting timedelta64 when using pandas.to_excel

Question

I am writing to an excel file using an ExcelWriter:

writer = pd.ExcelWriter(fn,datetime_format=\' d  hh:mm:ss\')
df.to_excel(writer,sheet_name=\         


        

Answer 1

Some addition to the above.

Excel zero date is 1-1-1900, while pandas.TimeStamp(0) gives me 1-1-1970.

So, I changed code to

df['td_datetime'] = df['td'] + pd.Timestamp('1900-01-01')

and now it works correctly (and you can correctly add cells to add timedeltas)

Also you might like to display hours only (not 1 day 1 hour, but 25 hours) and for this you can use the following format:

writer = pd.ExcelWriter('tmp.xlsx', datetime_format='[h]:mm:ss')