# 10 Additional services


 

## 10.1.1 TIME?   »Request current time information«


ExpressLink modules *must* provide time information as available from SNTP, GPS or cellular network sources. Devices can choose to maintain a time reference internally even when disconnected or in sleep mode, depending on implementation specific software or hardware capabilities. Returns:

**10.1.1.1**   `OK {date YYYY/MM/DD} {time hh:mm:ss.xx} {source}`  
If time information is available and recently obtained, the module returns 'OK' followed by that information. 

**10.1.1.2**   `ERR15 TIME NOT AVAILABLE`  
A recent time fix could not be obtained.

## 10.1.2 WHERE?   »Request location information«


ExpressLink modules can optionally provide last location information as available from GPS, GNSS, cellular network or other triangulation method. A time stamp is provided to allow the host determine whether the information is current. The implementation of this command is optional.Returns:

**10.1.2.1**   `OK {date} {time} {lat} {long} {elev} {accuracy} {source}`  
If location coordinates could be obtained at date/time, the module returns 'OK' followed by the information. 

**10.1.2.2**   `ERR16 LOCATION NOT AVAILABLE`  
A location fix could not be obtained.