Supermarket opening times are definitely not that restrictive (these days, but I don't recall it ever being like you mentioned & I moved to Berlin in 2013). The ones near me are usually open early morning till late evening (8-10pm), monday to saturday.

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throw-the-towel 7 hours ago | parent | next [-]

The way you call 8pm "late evening" confirms GP's experience :)

	▲	annzabelle an hour ago \| parent \| next [-]
		Not Germany, but I live in a rural part of New Zealand. I noticed that several places in my town, including the chippy, had signs posted out front saying they were open til "late." Coming from the eastern US I assumed that late was at the earliest 11 or 12. Watch my surprise when I try to go get fish and chips at 8:45 and the chippy is already closed.
	▲	ido 6 hours ago \| parent \| prev [-]
		8-10pm for the supermarkets near me & well later than that is night not evening :) It's certainly not 5pm is what I meant.

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myrmidon 14 hours ago | parent | prev [-]

There is a lot of regional variation, mainly between the south and the rest of the country. 8am to 8pm monday to saturday is typical for Bavaria (Munich, Nuremberg).