dtt_date_time(x, ...)# S3 method for integer
dtt_date_time(x, tz = dtt_default_tz(), ...)
# S3 method for double
dtt_date_time(x, tz = dtt_default_tz(), ...)
# S3 method for character
dtt_date_time(x, tz = dtt_default_tz(), ...)
# S3 method for Date
dtt_date_time(x, time = hms::as_hms("00:00:00"), tz = dtt_default_tz(), ...)
# S3 method for POSIXct
dtt_date_time(x, tz = dtt_tz(x), ...)
# S3 method for hms
dtt_date_time(x, date = dtt_date("1970-01-01"), tz = dtt_default_tz(), ...)