We have Zero problems with Genetec, we make sure the cameras DON'T put a overwrite box of any time or date info into the stream, and the VMS takes care of it all. As an example I am at work right now looking at an example of the switch over, it goes from 0159 hours to 0300 hours, there is no info for 0200 to 0259, in 6 months if I remember you have 0159 to 0200 twice in the archive. We let the VMS control all time and date stamping on video as well as saved photos from the video. The VMS and all cameras are configured to pull time from our local NTP server. We had an issue a couple of years ago, Genetec failed to update as we changed the IP for the NTP server and all we did for evidence is make a reference to the report it was attached to. It will hold up as evidence, if it is noted in the report at the time it is written. I can imagine it could be a problem with smaller system that relay on a NVR or DVR with old firmware. Also it is not so easy for a universal system, look at the uses of DST across the U.S.A
From Wikipedia:
Daylight saving time in the United States is the practice of setting the clock forward by one hour during the warmer part of the year, so that evenings have more daylight and mornings have less. Most areas of the United States observe daylight saving time (DST), the exceptions being Arizona (except for the Navajo, who do observe daylight saving time on tribal lands),[1] Hawaii,[2] and the overseas territories of American Samoa, Guam, the Northern Mariana Islands, Puerto Rico, and the United States Virgin Islands. In general, daylight time is not observed in lower-latitude regions, as summer days are not much longer than winter ones as in higher latitudes, so the advantage of the change is smaller.
Daylight saving time starts on the second Sunday in March and ends on the first Sunday in November, with the time changes taking place at 2:00 a.m. local time. With a mnemonic word play referring to seasons, clocks "spring forward and fall back"—that is, in springtime the clocks are moved forward from 2:00 a.m. to 3:00 a.m., and in fall they are moved back from 2:00 a.m. to 1:00 a.m. Daylight saving time lasts for a total of 34 weeks (238 days) every year, about 65% of the entire year (including leap years).
The following table lists recent past and near future starting and ending dates of daylight saving time in the United States:
Year |
Start |
End |
2014 |
March 9 |
November 2 |
2015 |
March 8 |
November 1 |
2016 |
March 13 |
November 6 |
2017 |
March 12 |
November 5 |
2018 |
March 11 |
November 4 |
2019 |
March 10 |
November 3 |
2020 |
March 8 |
November 1 |