The Casio F-91W doesn’t account for the year, it showed today’s date as Thursday, March 1st.
Ask HN: Did you encounter any leap year bugs today?
11–20 of 498 posts
Re: Ask HN: Did you encounter any leap year bugs today?
#12Re: Ask HN: Did you encounter any leap year bugs today?
#13One of the largest food store chains in Sweden had their entire card payment go down because someone forgot to handle leap years!
Re: Ask HN: Did you encounter any leap year bugs today?
#14Can't you just backdate some servers to confirm the fix?
Not directly related to leap year, but a couple weeks ago I set up a script for testing notification behavior that used libfaketime to simulate runs at different times.
I guess this might be less-trivial if you've got a distributed multi-service architecture and perhaps also depend on APIs that aren't under your control in the first place.
Re: Ask HN: Did you encounter any leap year bugs today?
#15> A number of New Zealand petrol pumps stopped working on Thursday due to a "leap year glitch" in payment software, fuel stations and the payment service provider said.
https://www.reuters.com/world/asia-pacific/leap-year-glitch-...
Re: Ask HN: Did you encounter any leap year bugs today?
#16There was one in the Phoenix Framework (Elixir) about issuing certificates with an invalid end date: https://github.com/phoenixframework/phoenix/issues/5737
Interestingly, Azure had this bug some years ago too leading to an outage. https://azure.microsoft.com/en-us/blog/summary-of-windows-az...
Re: Ask HN: Did you encounter any leap year bugs today?
#17Payroll software at work had a one-off planned maintenance day today, presumably to avoid worrying about any bugs.
Re: Ask HN: Did you encounter any leap year bugs today?
#18One cleanup script broke because Python doesn’t have a clean way to subtract a year, and if you do now.replace(year=now.year-1), you get a ValueError when now is 2/29. It’s easy enough to address. There are various StackOverflow posts on such things. Here is one: https://stackoverflow.com/questions/54394327/using-datetime-...
What is your definition of "subtracting a year"? Seems like that's a relatively ambiguous operation without more specification.
Re: Ask HN: Did you encounter any leap year bugs today?
#19I'd suggest not waiting 4 years to publish a postmortem, if you're serious
Re: Ask HN: Did you encounter any leap year bugs today?
#20EA Sports WRC has a bug that can be fixed by setting the date to March 1st. https://twitter.com/EAHelp/status/1763192739322085598