The date of the last Monday of last month, added to that of the first Thursday of the following month, gives a result of 38. If we know that both dates belong to the same year,
Would you know what month we are in?
August. To add 38 it is only possible that it is the highest date for the last Monday of the month, that is 31, and the highest for a Thursday of the month, that is 7. This forces the current month to also have 31 days. Two months followed by 31 days in the same year can only be July and August.