How can I get the date of the last transaction from the blockchain.info API? Is there a way to request the date of last transaction via API? I run a request to see balance of my addresses and need to request the date of the last transaction, how would I do that?
This is an ambiguous question as we don't know what your environment is.
If you are using bitcoind, a call to gettransaction will give you a time field which is when the transaction has been seen.

Perhaps if you elaborate a bit more we would be able to answer the question more specifically.