Does "another day" means after 24 hours from your last lesson, or you finished at 11 pm so 12 am lesson will count as day 2.

Answer 1

If you completed a lesson before 12 am then it will day 1 and then you completed a lesson after 12 am will come in second day.

Answer 2

No
Its not like that
In sololearn
Suppose u have completed a lesson at 9pm and u have completed another lesson at 12am then it will not count, u have to complete another lesson at the next day at 9pm or after 9pm then it will count

Answer 3

Yeah I know its a bit confusing
As the time is based on an American clock

Answer 4

Its based on SoloLearn time zone. It may different from your country..
Just try to complete within 24hr and it should be change of date in SoloLearn time zone. Always try in same hour in all days..