My understanding is that RUN date is the date you do the RUN (eg in prophet / moses / igloo / whatever, the date on which you performed the calculations)
Whereas VALuation date is the initial 'as at' date you use to VALue the run (eg using data extracted as it pertains to Year End / Month end whatever).
I have also heard that MODEL date is the date the model was built - so a model could be built on Monday (model date), run on tuesday (run date) but using the data 'as at' sunday (valuation date).
If you do work (or have worked) as an actuary, and / or have used the software applications above to develop models, I would be very interested in your views of exactly what the correct definitions are for the following:
- RUN date?
- Valuation date?