The time change on March 13, 2022 brings to mind several things:

 I usually check the batteries in stuff on the time change day.  I finally abandoned alkaline batteries (except button cells where there's often no alternative) and started using Energizer Ultimate Lithium AA and AAA cells.  I use the Tenergy Centura 9V  batteries in smoke alarms (Centura is the low self discharge Nimh line).

The reason for changing from alkalines is found in this box:

box with items to be fixed "real soon now"

  all the stuff where the contacts have been damaged by leaking alkalines:

calculators, clocks, flashlights to be fixed

And it's not like a spent alkaline cell provides these beauties:

D cell carbon rod and AA cell carbon rod with metal cap

   carbon rods from carbon-zinc cells (be sure to leave the end cap on, otherwise it's harder to make a connection).

Another task for time change day is to change the non-radio clocks that need it like the thermostat.  And there's always one WWVB clock that didn't get the memo from Colorado :)

One clock I check is my Morse watch, I hard coded a correction factor into the PIC and it lost 54 seconds after being set 10-22-21, (142 days), .38 seconds/day,  about 2.7 seconds/week slow.  60x60x25x7=604,800   2.7/604,800 = 4.5e-6 or .00045 % slow.  A more industrious person would re-do the correction factor.  But I used a CR123 lithium battery without regulation so maybe part of that error is due to the battery ?  More data / analysis needed !
    
One of the reasons why I purchased my Yaesu FT-450d several years ago was to use the 1 Hz precision of the receiver along with the 305th harmonic of the 32,768 Hz crystal in a clock circuit to predict the error and possibly calibrate the oscillator.  305 x 32768 Hz is 9,994,240 Hz so I figured it would be near the 30 meter band and relatively easy to hear.  However I hadn't read up on the FT-450d carefully enough.  While the synthesizer has 1 Hz precision the FT-450d doesn't display the Hz digit.  For that a computer is required with a serial port.  Heck !

I've always meant to do a simple LCD display for the FT-450d that will show the 1 Hz digit, it'll be done "real soon now"  (with apologies to Jerry Pournelle).  But it was just easier to try hard code a correction factor in the PIC software than try to use the Yaesu to hear the clock harmonic near 30 meters.

Anyway, lots to do today !

Best Regards,
Chuck, WB9KZY
http://wb9kzy.com/ham.htm