There are four attributes which describe the date/time of the forecast row;
Timestamp is the GMT/UTC time at which the forecast row is scheduled to occur. DO NOT USE this attribute if you want to render the date, since without the spot you don’t know which timezone the time should be adjusted for.
localTimestamp has this adjustment factored in including daylight savings time, thus use
localTimestamp in any date function that accepts a UNIX timestamp when you want to render a formatted date and you won’t need to worry about the spots timezone.