O-Tag

[Daz]

I assume O-Tag is the German equivalent of H-Hour, although a search on the internet for the meaning came up with nothing that was useful except that Tag is German for, "day", as in "Good day".
One version even suggests its use for underwear lol

The main reason for this post is to find out if I am pronouncing it right.
Is it pronounced "Zero tag" as in "zero hour/day", or it is "O-tag" as in the letter O like in "Over there"?

It could also mean "Day one" or "First day" of the offensive I assume?

 

[rocketman]

In a book about the German side of the Bulge, it is stated as "Null-Tag" which in English would be "Zero Day". It is the day which the attack commences, so that would be D-Day.

 

[Daz]

Thanks' rocketman, that's exactly what I wanted to know