esp8266 deepsleep reset

hi ,
Mostly concentrating on the power consumption . I am using ESP8266 and RTC in our project for the low power consumption i m trying to put esp in deepsleep for more hours(8hrs,6hrs), but its not getting reset correctly .I have a doubt esp will be in deepsleep for hours or not . Will it get reset if we set specific time in rtc .i have set to reset for every 8 hours from deepsleep but its not getting reset . Looking for the manual reset, if i do the manual reset the internal time is running correctly.
ESP deepsleep works only on microseconds . will it works for hours if set in the rtc to get reset from deepsleep.
thanks in advance.
Mostly concentrating on the power consumption . I am using ESP8266 and RTC in our project for the low power consumption i m trying to put esp in deepsleep for more hours(8hrs,6hrs), but its not getting reset correctly .I have a doubt esp will be in deepsleep for hours or not . Will it get reset if we set specific time in rtc .i have set to reset for every 8 hours from deepsleep but its not getting reset . Looking for the manual reset, if i do the manual reset the internal time is running correctly.
ESP deepsleep works only on microseconds . will it works for hours if set in the rtc to get reset from deepsleep.
thanks in advance.