After getting some clarification on this request in the comment section above I have updated the title of the question to reflect the context of the request. Which is to find all stocks that have made their 52 week low within the past month.
There is no need to create two scans to accomplish this. The most accurate method is to use the daily time frame. There are an average of 251 trading days in any given year. So we run the scan on the daily time frame and for the 52 week low we look back 251 bars. There are 21 trading days in the average month so we look back 21 bars to determine if the 52 week low occurred in the last month.
Here is the code to run this scan:
input longTermBars = 251;
input shortTermBars = 21;
def lowestInLongTermBars = Lowest(low[shortTermBars], longTermBars);
def targetLow = LowestAll(lowestInLongTermBars);
plot scan = Lowest(low, shortTermBars) == targetLow;