Full disclosure: I am a freelance professional photographer/cinematographer for the firearms and defense industry, among others.
Correct.
I am no expert on mechanical movements, but as I understand it, it's because, at those hours, the movement is in the process of making the date change and if you use the quickset date capability, you are in effect forcing gears (really tiny gears) to do something they don't want to do quite yet. Thus you can break the movement.
It can be a pain. For example, my GMT is meant for intercontinental travel, but if I take an early evening flight to Europe, I either need to change the hour (and date) before the flight or wait (since I'll arrive at about 2 am US time) for many hours. This sort of negates the utility of the watch in part, but if I wanted a purely efficient time piece I wouldn't buy a mechanical watch. Also, I get to play with the rotating dial to show US time and Europe time until I get to change the time on the watch, which is a tiny delight in fidget spinner way.
Nowadays with all our digital equipment, we are used to things happening immediately. Mechanical watches are from another era, when the programming didn't work on '1s' and '0s' but on continuously moving gears that one couldn't just move to accomplish something without consequences, often bad. That's both the attraction and the irritation of those timepieces.
" La rose est sans pourquoi, elle fleurit parce qu’elle fleurit ; Elle n’a souci d’elle-même, ne demande pas si on la voit. » Angelus Silesius
"There are problems in this universe for which there are no answers." Paul Muad'dib
I’ve always done date changes in the early afternoon - I have to advance past 12 to see which side of the clock it’s on.
Ken
BBI: ...”you better not forget the safe word because shit's about to get weird”...
revchuck38: ...”mo' ammo is mo' betta' unless you're swimming or on fire.”
To add to the above:
" La rose est sans pourquoi, elle fleurit parce qu’elle fleurit ; Elle n’a souci d’elle-même, ne demande pas si on la voit. » Angelus Silesius
"There are problems in this universe for which there are no answers." Paul Muad'dib
The upside of a traveler GMT is that you can just click the hour hand forward or backward without worrying about this.
The downside is that none of them (that I've seen) have a quick-set date so you have to jump the hour hand a bunch to set the date in short months.
Here's something different. The wife gave me this as a an anniversary gift last night. It's a Seiko SBBN040 1000M "1978 Golden Tuna 40th Anniversary Reissue." I've been lusting after this watch for a while. It's got a ton of history, old school tech and modern materials in a unique package. As a JDM watch fan and a fan of Bond movies this knocks it out of the park.
Haven’t worn this guy in awhile. I think I want a leather strap for it
Forgive me Brothers, for I have sinned… I carry lust in my heart for the Apple Watch Ultra.
One of Kelly’s docs wears one, and was showing me the display. It would be a great EDC watch on an aftermarket titanium bracelet. I wear a Series 7 now, and generally only wear an automatic on date night or when I’m dressing up.
Ken
BBI: ...”you better not forget the safe word because shit's about to get weird”...
revchuck38: ...”mo' ammo is mo' betta' unless you're swimming or on fire.”