Hi, I just put together some info from a long list of timings (from occultations.org) of the disappearance & reappearance of Mars and if anyone's interested in having a look, I've shared it here on Google Sheets: https://docs.google.com/spreadsheets/d/15_kCgqU2o7B4uVL5LzbC8KEfr4o5VtyuuG_U... The most significant issue is the altitude of the disappearance. To see it from anywhere on the Wasatch Front, you'll need as low a visual horizon as you can get toward azimuth 126 degrees (East is 90, so it's sort of East-South-East) because the altitude is only 4 degrees. Note that based on other entries, the farther south you are from SLC (not sure the exact coordinates used for it by the program that produced the data), the higher in the sky the event will be (and there is no correction factor for that, but Phoenix shows 11 degrees as opposed to SLC's 4). So, heading farther south will get things a bit higher, but the opposite is also true: farther north means lower. Hope this is of use! And hoping to find a low horizon on Tuesday morning--and fewer clouds than predicted! John