duration of cash

Hey guys, quick question…are we always to assume this is .25 when allocating from equity to debt using futures for example. In some cases I’ve seen it as 0 and in others ive seen it as .25. Oh, yeah, and I almost forgot…in exactly two days we will be 3 minutes shy of being done with this thing (hopefully). Thanks!

if it is given - use it. If not use 0