this is not possible because i dont have 5 different pages but i add loop for pages . in my report two colums first is content and second is number . the conytent are same for all page but number are different for all pages .

So, you have a report with 2 columns. Are the numbers in the second column unique for each date? (You just mentioned that the numbers are different for all pages.) If yes, then you can add a variable in the report where you can set the value there based on the dates and use that variable within the for loop to add only matching rows. For example,
<!-- Set the number corresponding for the date in col_val. 1 to 5 is used here for example and 0 as default value -->
<t t-set="col_val" t-value="0" />
<t t-if="date1">
<t t-set="col_val" t-value="1" />
</t>
<t t-if="date2">
<t t-set="col_val" t-value="2" />
</t>
<t t-if="date3">
<t t-set="col_val" t-value="3" />
</t>
<t t-if="date4">
<t t-set="col_val" t-value="4" />
</t>
<t t-if="date5">
<t t-set="col_val" t-value="5" />
</t>

If you have used the for loop in <tr>, move it into another block and add the condition in <tr> for the table body.

<t t-foreach="rows" t-as="row">
<tr t-if="col_val == row.number">
<td><span t-esc="row.content" /></td>
<td><span t-esc="row.number" /></td>
</tr>
<t>