Yes, you’ve made an excellent point, and it’s true. That’s why I said 鈥渇or most of us鈥 — because virtually all these sky events have latitude-dependent deviations. My favorite happens for our friends in the far north, like in Fairbanks. Here in the lower 48 and Hawaii, the Harvest Moon rises only 20 - 25 minutes later each night for several nights surrounding the September equinox, instead of the normal 50 minutes later the rest of the year. We don’t usually mention it, but in the far north the Moon at that time can actually come up EARLIER on successive nights! For most events in our calendar (like the visibility dates for Mercury) I do the calculations based on where the majority of us live, or else I use our headquarters in Dublin, New Hampshire. 鈥擝ob Berman
Yes, you’ve made an excellent point, and it’s true. That’s why I said 鈥渇or most of us鈥 — because virtually all these sky events have latitude-dependent deviations. My favorite happens for our friends in the far north, like in Fairbanks. Here in the lower 48 and Hawaii, the Harvest Moon rises only 20 - 25 minutes later each night for several nights surrounding the September equinox, instead of the normal 50 minutes later the rest of the year. We don’t usually mention it, but in the far north the Moon at that time can actually come up EARLIER on successive nights! For most events in our calendar (like the visibility dates for Mercury) I do the calculations based on where the majority of us live, or else I use our headquarters in Dublin, New Hampshire. 鈥擝ob Berman