Obtain time from a network server
Init ntptime with host and timezone
Set the NTP server and timezone
Get timestamp
Obtain Unix timestamp
Get date format with -
Get the date, display format with separator -
Get time format with -
Get the time, display format with separator -
Get date format with - and time format with :
Display date and time, date format with separator -, time format with separator :
Get year
Obtain year
Get month
Obtain month
Get day
Obtain day
Get weekday
Obtain weekday
Get hour
Obtain hour
Get minute
Obtain minute
Get second
Obtain second
Display Unix timestamp and current date and time (Note: when the program downloads to run offline, add a WiFi connection program before the NTP initialization to connect the device to the network.)