Compression Stroke

Hi all. As stated in my intro, I am restoring a 1965 Dodge Dart GT with a 273 Charger engine. I know this has been discussed previously; but I am still confused. If my cam timing mark is at 6 o’clock and the crank timing mark is at 12 o’clock, is that the compression stroke? Thanks.
As post #2 says, it is but not for #1. With the dots both at the 12 o'clock position, then you are at TDC for #1.