• check each dataArray if missing_value" or "_FillValue" is defined as an attribute
• handle int type arrays by updating VMISS in NASA Ames header

split 2D trajectory files into multiple NA1001 files

UTF-8 should be default

• DATE is set as 1969-12-31 or 1970-01-01
• seconds-after-midnight around 86400 (first date) or 0 (second date)
• not reproducible on Linux (binary built with identical venv setup)

Seems like the unit is totally messed up; conversion from ns (int) to s (float) fails. Could also be the call to datetime.fromtimestamp or .timestamp(), which both use system-specific C-libs.