Good morning,
Re-visited zoomx's application of "NTP with Timezones and have a successful working sketch, "NTP_Observations_SPIFFS.ino"
Included in the attachment are the sketch, "LOG.TXT (portion actually logging during testing) and output of the Serial Monitor (during testing.)
Note: Time keeping is now accomplished with software using NTP time server.
William
NTP Observatons_SPPIFFS .zip (15.8 KB)