boblarson, I have same request, only need the time to increment in .25 hours. The code works great for 1 hour increments, but ignores any decimal. I modified your code
Me.textBox83.Value = Nz(Me.textBox83.Value,0) + 1
to
Me.textBox83.Value = Nz(Me.textBox83.Value,0) + 0.25
Thanks for any...