Would need to be assessed but won't be anything like the "millennium bug" that created a lot of work [understatement] to ensure New Years' Eve 1999 did not become Armageddon.
Many systems [if designed carefully] would be linked to "lighting up time" timetable - so [on paper], just revise this...
Most factories are indoors anyway so not sure how daylight helps them - I'd heard it was to benefit the Farmers who work the land in all daylight hours in winter.
However, tractors now have super LED lighting and so are better equipped to work in hours of darkness.
All a bit meh for me.