Can I choose the weekday for which I want to obtain weekly stock prices via get_timeseries? Seems...

... like weekly price data is always located to Fridays.

no matter which date I choose, the weekly data is always shown for Fridays:

In[124]: ek.get_timeseries('ALGN.O', fields='CLOSE', start_date='2019-09-24', interval='weekly')
Out[124]: 
ALGN.O       CLOSE
Date              
2019-09-27  175.84
2019-10-04  181.59
2019-10-11  200.16

ek.get_timeseries('ALGN.O', fields='CLOSE', start_date = '2019-09-26', interval = 'weekly')
Out[125]: 
ALGN.O       CLOSE
Date              
2019-09-27  175.84
2019-10-04  181.59
2019-10-11  200.16
2019-10-18  213.88

Would be great if somebody could help along.

Thanks and regards

Kilian