(daily pannel data) i want to create time dummy variable for the week

Hello everyone.
I can not speak English very well. So I use Google Translator.
I have unbalanced daily pannel data observed for six years.
In other words, some objects are observed late or the observations are quickly completed.

I know how to create a time dummy variable for day.
(i.time) Is it right?
Since it has been observed for 6 years, 365 x 6 time dummy will come out.

But,
I want to create a time dummy variable for the week.
I wonder how it is possible.
Maybe (365 x 6) / 7 time dummies should be made.
(I have daily panel data.)