UC Davis is extremely flaky

[asinghvi17]

GeoMakie uses GADM in some examples, and routinely has issues with the UC Davis servers being down.

Are there any other URLs that serve GADM, that could be used as alternate sources?

[rafaqz]

RasterDataSources has the same problem with WorldClim, which is also ucdavis.

An email to someone involved in these projects at ucdavis might be a good strategy, hosting this many major global datasets and dropping out three weeks a year is just not ok. It makes them look like amateurs, and someone should care about that, but I'm not sure who exactly.

Seems R people have been putting up with it for years:
rspatial/raster#169
rspatial/raster#263