If you're in pure DOS (i.e. NOT console under Win9x/2k), like Ms DOS 6.0 you can always try this:
@echo (ascii code of escape) | time | find "is" >toto.txt
@echo (ascii code of escape) | date | find "is" >>toto.txt
I explain. Under DOS edit, to type the ascii code of escape you must press ctrl+p then press escape. you'll see a "<-" back arrow character, it's the escape character. The piped find will normally eliminate the "the date is", so you only have the date and the time remaining.