[PROJ] CSRS Epoch 2017.50 (NAD83)

[Javier Jimenez Shaw]

Hi

I discovered today that there is a datum in California called "CSRS Epoch
2017.50 (NAD83)"
http://geoweb99.ucsd.edu/index.php/epoch2017/
http://sopac-csrc.ucsd.edu/

"CSRS Epoch 2017.50(NAD83) replaces the previous “CSRS Epoch 2011.00
ITRF2005 NAD83(NSRS2007)” datum that included coordinates for 830 CSRN
stations."

I have not seen it before, so I guess there is no CRS using it in EPSG. (I
do not find that datum in EPSG)
How can it be used with PROJ?

(Is it normal that some states use their own datum in the US? It is not
enough with hundred of State Planes ;)

Cheers,
Javier.

PS. Be careful with the acronyms:
CRS: Coordinate Reference System
CSRC: California Spatial Reference Center
CSRS: California Spatial Reference System
NAD83(CSRS): Canadian Spatial Reference System

So "NAD83(CSRS)" and "CSRS (NAD83)" are not the same.

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