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I just saw articles which say the Harvest moon will be visible in the US.

Apart from the US, in which other country can people see it? Can I see it from India?

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    $\begingroup$ Welcome on the Astronomy SE! Possibly that it is only my lack of knowledge, but what means "harvest moon"? Do you understand full Moon on it? $\endgroup$ – peterh says reinstate Monica Sep 13 at 16:27
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    $\begingroup$ Please see edit $\endgroup$ – Vikas Sep 13 at 16:30
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    $\begingroup$ Thanks! So is it much better. $\endgroup$ – peterh says reinstate Monica Sep 13 at 18:08
  • $\begingroup$ There's a full moon every four weeks. Ignore the current media hype pretending that new moons are exciting! and special!! just because of the time of year they occur. $\endgroup$ – David Richerby Sep 14 at 19:23
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"Harvest moon" just means the full moon at around the time of the equinox on September 21.

The full moon is low in the sky during summer (June and July in the Northern Hemisphere) and high during the winter. So September is a month when the full moon is much higher in the sky than the moon in August. In the past this allowed harvests to continue after dark.

The full moon in September can be seen all over the world, but it may not have the same cultural significance that it had in Europe and North America.

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    $\begingroup$ India is in the tropics, so the ecliptic crosses the meridian at a high altitude, so most Full Moons there are pretty high at midnight. And in the southern hemisphere, most of us live at fairly low latitudes, compared to the northern hemisphere (eg, Sydney is 33°S), so our autumn equinox Full Moon in March isn't that significant either. $\endgroup$ – PM 2Ring Sep 13 at 19:44
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Because the Moon phase changes relatively slowly (especially at the Full Moon), a similar Moon phase can be seen from all places around the world.

For example, the Full Moon in September 2019 occurs at 4:33 UT. If the Moon is visible from your location at that time, then you can see the Moon when it is exactly "Full". If Moon is not visible until 5 hours later because of your location, then you technically do not see the Full Moon (100% illuminated), but you see the Moon at a slightly less illumination (maybe 99%). The difference is minor for most purposes.

Naturally, the time at which the Full Moon is visible from one's location could occur the day before or after the exact time of the Full Moon.

Not directly related to the phase, but the situation in which viewing the Moon at a specified time is more important is when an occultation or close conjunction occurs. If the Moon is close to Jupiter at X hours UT for example, then the separation will be much larger when viewing it several hours before or after that time.

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