Maximum Date/Timestamp

TimAI2 won this one, using Google Sheets.

For the record, here's a working solution using a csv download and a bunch of block procedures:

Sample Data - Sheet1.csv (228 Bytes) Sheets_Latest_By_Name.aia (7.7 KB)
(I used my own data at Sample Data - Google Sheets
because I have no GPS data.)
P.S. Credits to TimAI2 for the getRange function