The 'F1 RTC does not have separate time and date registers, it only has one 32-bit seconds counter. It's up to you how do you use it.
The "libraries" tended to use it only to keep time and then they kept date in the separately in either "normal" RAM or in some battery-backuped RAM, resulting in complaints like these. But there's no reason for this approach, you can store both date and time (against some suitable epoch) in 32-bit counter.
JW
