I have been this way more than a few times !!
Over the years, as more and more visitors visit this area, the council has restricted more and more of the roadside around here, and this is no exception. If one looks the other way, one can see how the bay would have been. It may, indeed still be like that. For me, the DYLs condemn you, because they apply to the whole 'road' which includes everything up to the property line, (the dry stone wall). I don't think the faded and worn dashed white line would win it, as the DYLs are very clear.
Also the observed start and end time is identical.
There is nothing in the law or its associated regulations that mandates observation times. There are two exemptions to these DYLs, (1) loading/unloading and (2) boarding/alighting passengers. Unless you tell us more, I doubt either of these applies.
Locus is of less importance to PCNs served at the roadside to car or driver as it is assumed you know where you have parked your car. It could be an issue for a Notice to Owner if the driver was not the owner.
The road you parked on is the old Mam Tor Road. Mam Tor is called "Shivering Mountain" and the constant rock falls and the road falling into the valley below, led to its closure. I first came this way in the late 70s on a motorbike, (Yamaha XS750) with a German chap on a Honda CX500, and we climbed up Mam Tor.
The PCN does not have certain mandatory information, but I don't think you have posted all of it. Errors in the'small print' could make it void, so post it all up, please.