Can the naked eye see Mercury in St. Petersburg on June 22, if at that time it is in the upper conjunction?

Can the naked eye see Mercury in St. Petersburg on June 22, if at that time it is in the upper conjunction? in the bottom connection? in the greatest western elongation? in the greatest eastern elongation?

The planet Mercury is always located in the sky near the ecliptic no further than 28 degrees from the Sun. June 22, the day of the summer solstice, the Sun in St. Petersburg plunges under the horizon shallowly and for a short time. All this time it remains quite light. Even if Mercury is in the greatest elongation on this day, its declination will be less than the solar one, and it will rise shortly before it or set immediately after the Sun, remaining invisible against the bright background of dawn. Being in the upper or lower conjunction, Mercury all the more cannot be seen next to the bright Sun.

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