Front-end cartographer. Research Engineer in Geographic Information Science at CNRS & UAR RIATE. Author of Mad Maps (2019), Practical Handbook of Thematic Cartography (2016, 2020, 2025) and Cartographia (2025).
What about naming the file using a YYYYMMDD date postfix? It certainly is sortable by date in case you save multiple files at different times _and_ it is not ambiguous about what is month and what is day...
My 2 cents