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Line 5:
Line 5: − <del>When the time is normally set, the date in the RTC is set to the start of 2001 (''and so is the time?''), and</del> (not always correct) the console saves to the [[Config Savegame]] the time and date difference between the actual time and the RTC value.+
format of offset
The hardware RTC can count between (at least) 2001-1-1 and 2050-12-31.
The hardware RTC can count between (at least) 2001-1-1 and 2050-12-31.
When the time is normally set, the console saves to the [[Config Savegame]] the number of seconds of difference between the actual time and the RTC value.
:This also explains the apparently random setting of the date after removing the battery, and why adjusting the clock in [[NAND Redirection|multiboot scenarios]] often results in incorrect values in other OS instances.
:This also explains the apparently random setting of the date after removing the battery, and why adjusting the clock in [[NAND Redirection|multiboot scenarios]] often results in incorrect values in other OS instances.
Most likely, software disturbed by clock adjustments saves the raw RTC value and, on load, checks whether it has advanced. [[3DS Development Unit Software|CONFIG]] can directly adjust the hardware clock, thus avoiding associated problems.
Most likely, software disturbed by clock adjustments saves the raw RTC value and, on load, checks whether it has advanced. [[3DS Development Unit Software|CONFIG]] can directly adjust the hardware clock, thus avoiding associated problems.