Modelbuilder - make service area layer

i made a model in the model builder (ArcGis) to make a servie area layer (see figure).

now, i want to run this tool for the same locations but for different hours. -> the results would be a feature class for the location of the service areas at 6.00h, the next output would be another feature class for the location of the servicea areas at 7.00h and so on.. (from 6.00 AM untill 22.00PM)

now how i could change the day of time automatic?And also change the name of each output file.