When did the spanish come to atlanta Caltifornia?

The Spanish first arrived in what is now California in the late 18th century, with the establishment of missions and settlements, but there is no specific record of when they came to a place called "Atlanta" in California. It's possible that you may be referring to Atlanta, Georgia, or another location, as there is no notable city named Atlanta in California. If you meant a different town or context, please clarify for more accurate information.