update to use new NASA SVS api

[spacerest]

"The basic format for a Dial-A-Moon API call is:
https://svs.gsfc.nasa.gov/api/dialamoon/{UTC timestamp in YYYY-MM-DDTHH:MM}
Note: there is always a letter T in between the date and time, and it is not something that should be converted" svs.gsfc.nasa.gov