Android ADB Shell Date and Time Commands

Set time

"date HH:mm;am broadcast -a android.intent.action.TIME_SET"

Set date and time

date MMDDhhmmYYYY.ss;am broadcast -a android.intent.action.TIME_SET

Set time zone

setprop persist.sys.timezone "America/Los_Angeles"

Print current date and time

date

Print current time in milliseconds since January 1, 1970 UTC

date +%s%3N

Print current time in seconds since January 1, 1970 UTC

date +%s