subtract 1 hour from date in unix shell script

Question

I have the following in a shell script. How can I subtract one hour while retaining the formatting?

DATE=`date \"+%m/%d/%Y -%H:%M:%S\"`

Answer 1

Here another way to subtract 1 hour.

yesterdayDate=`date -d '2018-11-24 00:09 -1 hour' +'%Y-%m-%d %H:%M'` 
echo $yesterdayDate

Output:
2018-11-23 23:09

I hope that It can help someone. Best Regards!