biologger | Cross-platform keyboard and mouse event capture tool | Keyboard library

To start, I am a biologist who tracks the movements and behaviors of seabirds. On these seabirds I attach two separate biologgers that collect data at the same time. One is a GPS that records coordinates every 2 minutes, the other is called a time depth recorder (TDR) that records depth every 1 second (when the bird dives past a certain depth, the diving event can be considered a foraging dive). Combining these data will help identify spatially where the birds are diving for food. Thus, each bird I track has a pair of GPS and TDR data that need to be combined based on their time stamp. What would make life easier however, would be to batch process these with a For loop or something else since I have tracked over 20 birds and combining these one by one is quite tedious. I have very little experience writing loops and need assistance. Does anyone have any suggestions or advice?

What I have currently been doing is combining these two data sets one by one, per bird, by matching the timestamp on the GPS data (date) with the timestamp on the TDR data (DateTime), which filters out the depth data that have no corresponding coordinates.