You choose the Local Time Zone and then either turn ON Daylight Savings time or turn it OFF.
To get those settings you set the User Mode to ADVANCED?
Have you read the manual?
Edited by Wayne P. (02/08/16 12:13 PM)
Humminbird Helix 12 CHIRP SI, 1198c SI, 1198c SI, ONIX 10 SI NT, Helix 7 CHIRP SI GPS G2, 360, RC-1