General Question

flo's avatar

What is it called when the sun and the moon are out at the same time?

Asked by flo (13313points) March 23rd, 2017

How often does it happen, and what causes that?

Observing members: 0 Composing members: 0

13 Answers

kritiper's avatar

Daytime. It happens about 50% of the time between the last ¼ moon and the first ¼

zenvelo's avatar

It happens all the time, in fact it happens more days than not.

If you look at the “moonrise” time, for instance today, March 23, you will see the moon rose a bit before dawn today, and did not set until early afternoon.

The only time the Moon and the Sun are not out at the same time for a full day is during a full moon in winter at complete fullness. During the height of summer, the sun may not have set before the full moon rises.

It happens because the moon revolves around the earth. The moon goes around the earth “slower” than the earth spins in one day, so the moonrise is 30 to 40 minutes later each day. That is why the moon has phases.

cazzie's avatar

This is a GREAT question. We see the moon during the day a lot up at our latitude. But now. @flo has me wondering if latitude has anything to do with it. I think so. I just woke up in pain in the middle of the night here, so I’m a bit fuzzy, but all my learning about the solar system is pointing to the fact that latitude has quite a bit to do with how much we see the moon when the sun is up. I don’t know what it is called though, but I will be looking this up now, because it is such a good question.

I know there is a good program and I think it is also an app now called Stellarium. https://play.google.com/store/apps/details?id=com.noctuasoftware.stellarium&hl=no

My link comes up for Norway, but if you google search it you can download it and it tells you where the stars and moon and planets are for your latitude and longitude. Happy heaven gazing.

jwalt's avatar

There is no particular name for this, since it happens for most of the lunar cycle. The moon is visable during the day except near the time of the new moon, when it is very close to the sun’s position in the sky, and also near the time of the full moon when it is opposite to the solar position. At certain times during the cycle, the moon is easier to see than at other times.

zenvelo's avatar

@cazzie the moon does change apparent location through the seasons be cause of the earth’s tilt.

The moon does not orbit the earth in the plane of the equator, but in the plane of the ecliptic. So during different phases it may seem more North or south from where you are.

cazzie's avatar

I can go to work in the dark some mornings and there is an amazing moon over the fjord to the West. It happens just after the fall equinox.

Strauss's avatar

For about a week after the full moon every month, I can watch the moon set behind the Rocky Mountains as part of my morning commute. It happens later each day.

Dutchess_III's avatar

It’s just harder to see during the day and easily missed. I don’t think it’s anything special enough to require a special name.

flo's avatar

@Thanks everyone. Thanks for the link @cazzie and for liking the question.

@

cazzie's avatar

No problem, @flo! Happy sky gazing!

Dutchess_III's avatar

You know, the stars are out all the time.

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