- you cannot park here during such hours without a permit

- (unsigned, city-wide bylaw) you cannot park anywhere during such hours without a permit unless otherwise indicated

- (unsigned, city-wide bylaw) you cannot park anywhere for more than 3 hours unless otherwise indicated

- you cannot park between the signs (taxi stand/pickup)

Also:

- no stopping anytime

- you can not park here on school days

- handicapped parking only

- commercial loading only

Also!

- 3 minute passenger loading!

- Taxi-only parking

- Ambulance waiting spot

All of these spots are also "idling police car" spots.

Also!

When a sign serves to delineate areas with certain rules using arrows (e.g. no parking past this sign).

In addition:

- Parking for loading/unloading only

- You can park anywhere on this block for a cumulative 2 hours per day.

Those three examples are only different in the reasons given for the time-frame. You don't need to provide reasons, they're irrelevant, someone who wants to park somewhere cares whether it's illegal or not.

... and street cleaning is on the 2nd and 4th monday of each month (got towed on that premise once)

What is it about US streets that makes them so much more filthy than other streets that they not to be fully vacated in order to clean them sufficiently?

The only example for "irregular" no parking times I've seen in Germany are special exceptions for markets (typically Wednesday and Sunday, but the sign won't tell you if the market is cancelled on a particular day for a particular reason and you won't get towed or fined if you then park there when the market isn't happening) or special occasions (e.g. a circus) where they put up a temporary sign a week in advance.

I guess Germans really are more efficient (while simultaneously being more in love with having rules for every eventuality).

up nord : - you cannot park here on even days from Dec 1 - April 1