06-21-2024, 10:08 PM
Greetings all,
Here's a simple explanation;
"The shaded background just highlights that there are two such occurrences on that particular day. Considering them chronologically, on Thu at 62°N we have:
A moonset at 00:06
A moonrise at 22:03
A moonset at 23:52
The moon is visible up to 00:06, until the next moonrise at 22:03 when it remains visible for 1 hour and 49 minutes. To see if this makes sense, we’d have to look for a moonrise near the end of the day earlier (Wed) because we’re so close to the ‘black rectangle’ that indicates no moon is visible the whole day. The last event on Thu is the moonset at 23:52, which agrees with the ‘black rectangle’ (no moon visible) on Fri and Sat (i.e. the moon doesn’t rise again). We can also determine that for most of the day the moon is invisible on Thu (for roughly 22 hours).
That should also be close to what we see at 60°N on Thu: a moonset at 00:36 followed by a moonrise at 21:09, i.e. not visible for 20 hours 33 minutes. And the length of time it’s visible increases as the latitude goes South".
Does that make any sense? I had help with that answer as I made it too difficult to understand.
Johannes H.
Here's a simple explanation;
"The shaded background just highlights that there are two such occurrences on that particular day. Considering them chronologically, on Thu at 62°N we have:
A moonset at 00:06
A moonrise at 22:03
A moonset at 23:52
The moon is visible up to 00:06, until the next moonrise at 22:03 when it remains visible for 1 hour and 49 minutes. To see if this makes sense, we’d have to look for a moonrise near the end of the day earlier (Wed) because we’re so close to the ‘black rectangle’ that indicates no moon is visible the whole day. The last event on Thu is the moonset at 23:52, which agrees with the ‘black rectangle’ (no moon visible) on Fri and Sat (i.e. the moon doesn’t rise again). We can also determine that for most of the day the moon is invisible on Thu (for roughly 22 hours).
That should also be close to what we see at 60°N on Thu: a moonset at 00:36 followed by a moonrise at 21:09, i.e. not visible for 20 hours 33 minutes. And the length of time it’s visible increases as the latitude goes South".
Does that make any sense? I had help with that answer as I made it too difficult to understand.
Johannes H.