If you download a csv file between midnight and 1am (perhaps 00:59:59) the filename (in format whatsapp-monitor_YYYY-MM-DD&&HH MM SS AM.csv) contains the previous day.
For example, this morning I got a file named whatsapp-monitor_2023-01-14&&12 53 27 AM.csv whereas we were already Sunday Jan 15.
I just noticed this today.
If you download a csv file between midnight and 1am (perhaps 00:59:59) the filename (in format whatsapp-monitor_YYYY-MM-DD&&HH MM SS AM.csv) contains the previous day.
For example, this morning I got a file named whatsapp-monitor_2023-01-14&&12 53 27 AM.csv whereas we were already Sunday Jan 15.
Files generated after 1am have the correct date.
The data in the files is correctly timestamped.