Heating Materials:
Should generally take a few hours(at least 4 or 5? Not sure about the numbers), depending on the material. The time it takes to heat it up to a workable standard will generally increase as the tiers go up and the materials get stronger. Some metals will take less time such as Copper, Gold and Bronze because of their properties.

Hammering:
Hammering swords is an intensive process which requires much skill and focus. Depending on how complex your sword design is, you might have to re-heat the sword a few times. The action of hammering is, after all, beating a metal bar into the shape of a sword and making sure it's balanced and would make for a good weapon. The use of casting can make this process easier but requires the construction of a cast, as well as higher heat to completely melt the material. Hammering could almost take longer than the heating itself depending on the sword design.

Despite all that, hammering the sword is not a process that will need to be done in detail because it's probably going to be a pain. Just keep in mind it is an intensive process that takes a lot of time.

Tempering and Quenching:
The final stage of making a blade, involves cooling the sword rapidly or heating it slowly in order to increase or decrease the hardness of a sword. Making a blade harder increases the brittleness, and can result in it breaking more easily. However, it can also increase the sharpness of the edge. Decreasing the hardness via tempering increases the durability of the blade by making it more able to absorb shocks.

Tempering or Quenching wouldn't take very long and can be appended to the finishing of the blade as part of the same smithing action.

Finishing:

Involve creating the hilt, sheath and decorations. Could honestly be just as long as creating the blade, but for the most part you'll be able to time-skip it.