Russia (none Kaliningrad Oblast) has got the most:
country border with countries.
country border with sea.
time zone.
All mentioned have got the same
Russia borders with 14 countries (in this 2 through Kaliningrad Oblast), 13 with sea and 11 time zone (in this 1 through Kaliningrad Oblast).
reach: rather globalborderscuriositiesgeographygeography of Asiageography of Europegeography of RussiarecordsRussiatimetime zones
Answers by country
country border with countries.
country border with sea.
time zone.
All mentioned have got the same
answers
Poland
977
the United States
13