Overlay datapoints ran at different dates- Time series (microsoft sql server db)

|Iteration| ScriptDatapoint|

|1593274467 |7.5104274|
|1593274468 |7.4951262|
|1593274469 |7.5032092|
|1593274471 |7.8814563|

|1593701770 |8.086961|
|1593701783 |8.096961|
|1593701784 |8.106961|
|1593701785 |8.116961|

I have datapoints stored in Microsoft sql server ran at different dates, i would like to present the overlay data values in time series . But since the time column has different dates i am not able to overlay the datas any suggestions. PLease help