How do you read the clock on the side of the engines?

[WH23G3G]

I tried taking a photo of the clock on my engine once but it didn't turn out good because of the rusty dirty color. But since I've cleaned it I can see it perfect when I look at the block. It has 8 dots on it. The pointer points to the 6th dot. The D/N pointer points to D. Does that mean it was cast at 6am or 6pm? How do you read these things?

[Ghoste]

D and N refer to day shift and night shift.  I believe that in your case it means 6am.

[John_Kunkel]

From what I understand the dots and pointer are the number of pours in a shift (day or night shift). If the pointer points to the 2nd dot it was poured on the 2nd pour of that shift with no particular time reference.

[Ghoste]

That would make more sense as far as making sure how many times a mould had been used and that would be the important part from their quality standpoint.