In the Settings app you can enable the ability to swipe vertically to change the brightness of the screen backlight. Tap the red moon icon in the lower left to switch to a simplified night mode where the digits are displayed in red. That burns up some network packets and makes a nice light show, especially with the server info table showing. Tapping the offset or any of the lights makes Emerald Time immediately contact the NTP servers again to recompute a new offset. The colors indicate the state of the server connection. Tapping the seconds will cycle between seconds with tenths, just seconds, and nothing.įor the truly obsessed (and for the convenience of the developers) tapping anywhere on the cloud brings up a table of server statistics as shown to the right: 'n' is the number of good/bad packets received 'offset' is the difference between that server's clock and the internal clock 'σ' is the standard deviation 'rtt' is the average round-trip time to that server (in milliseconds). Tapping on AM/PM, time zone or hours:minutes will cycle between 12- and 24-hour time and between your local time zone and UTC ('GMT'). There are eight hot spots that you can tap. The other lights appear only while data is being collected. When Emerald Time has enough good data the green light is on. The red/yellow/green lights above the time show the progress of the server connections. Question marks are shown when there has not yet been a successful connection. The best value (not necessarily the smallest one) is shown in green.

After it disconnects only the difference between that server's clock and the iPhone's internal clock is shown. While Emerald Time is actually in communication with a server it shows that server's time. The four items inside the cloud represent some of the NTP servers that have been contacted. If an NTP connection cannot be made a gray '?' will appear instead. The color's saturation is based on how far the offset is from zero white means the offset is very small. The colored number at the upper right is the offset (difference in seconds) between the true time and the device's internal clock positive means the internal clock is behind.

Free utc clock app for android