Dear @Amanda_Hawkins ,
My question was similar/in line to the post API Correct Timestamp Get Sensors API Call and according to @Andrew_PurpleAir, the data retried will be in local computer time.
Not to create more confusion, I still want to know UNIX time stamp = 1589772600 will return me data in UTC or my local computer timezone which is PDT?
Conversion from one timezone to another is not an issue.
Thank you!!